WO2020015654A1 - Electronic expansion valve, manufacturing method thereof, and thermal management assembly - Google Patents

Electronic expansion valve, manufacturing method thereof, and thermal management assembly Download PDF

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Publication number
WO2020015654A1
WO2020015654A1 PCT/CN2019/096207 CN2019096207W WO2020015654A1 WO 2020015654 A1 WO2020015654 A1 WO 2020015654A1 CN 2019096207 W CN2019096207 W CN 2019096207W WO 2020015654 A1 WO2020015654 A1 WO 2020015654A1
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WO
WIPO (PCT)
Prior art keywords
cavity
valve
electronic expansion
expansion valve
valve body
Prior art date
Application number
PCT/CN2019/096207
Other languages
French (fr)
Chinese (zh)
Inventor
张荣荣
查达朝
陆颖翀
周磊
Original Assignee
杭州三花研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201810801389.8A external-priority patent/CN110735958A/en
Priority claimed from CN201810801473.XA external-priority patent/CN110735959B/en
Application filed by 杭州三花研究院有限公司 filed Critical 杭州三花研究院有限公司
Priority to JP2020561870A priority Critical patent/JP7150058B2/en
Priority to KR1020207032878A priority patent/KR102490126B1/en
Priority to EP19838360.6A priority patent/EP3825588A4/en
Priority to US17/044,705 priority patent/US11686512B2/en
Publication of WO2020015654A1 publication Critical patent/WO2020015654A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/35Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/50Mechanical actuating means with screw-spindle or internally threaded actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2341/00Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06Details of flow restrictors or expansion valves
    • F25B2341/068Expansion valves combined with a sensor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/18Optimization, e.g. high integration of refrigeration components
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • This document relates to the field of fluid control technology, for example, to an electronic expansion valve, a manufacturing method thereof, and a thermal management component.
  • the refrigeration system includes a compressor, an evaporator, a condenser, and a throttling element.
  • an expansion valve is used as the throttling element.
  • an electronic expansion valve is usually used as the throttling element.
  • the electronic expansion valve can be used to throttling the refrigeration system.
  • Medium such as refrigerant
  • the electronic expansion valve is an electronically controllable device
  • the refrigeration system also sets a sensor at the outlet of the evaporator to collect the relevant parameters of the working medium at the outlet of the evaporator, the sensor is connected to the control unit through the wiring harness, After obtaining the relevant parameters, the control unit adjusts the opening degree of the electronic expansion valve according to the corresponding control program.
  • This article provides an electronic expansion valve, its manufacturing method, and a thermal management component to help simplify the structure, facilitate the assembly and facilitate assembly, and ensure the reliability of the assembly.
  • An electronic expansion valve includes a valve body, a valve member, a control portion, and a sensor.
  • the valve body includes a first mounting portion and a second mounting portion.
  • the valve body has a first passage, a second passage, and the first
  • the mounting portion has a first cavity
  • the second mounting portion has a second cavity
  • the first cavity is in communication with the first channel
  • the second cavity is in communication with the second channel
  • the valve member includes a valve A seat, a valve core, and a rotor assembly, wherein the valve seat is formed with a valve port, and the rotor assembly can drive the valve core to move relative to the valve seat, and the movement of the valve core relative to the valve seat can adjust the valve port
  • At least part of the valve seat is located in the first cavity and at least part of the sensor is located in the second cavity
  • the control part includes a cover body, a stator assembly, and an electric control board, and the stator assembly and the The electric control board is electrically connected, or signal connected, or electrical
  • a thermal management component includes an electronic expansion valve and a heat exchanger, the electronic expansion valve is fixedly connected to the heat exchanger, the electronic expansion valve is an electronic expansion valve as described above, and the valve body includes a first inlet, The second inlet, the first outlet, and the second outlet, the first channel communicates with the first outlet and the first inlet, the second channel communicates with the second outlet and the second inlet, and the first outlet communicates with the inlet of the heat exchanger The second inlet is in communication with the outlet of the heat exchanger, and the inlet of the heat exchanger is in communication with the outlet of the heat exchanger through a third channel of the heat exchanger.
  • the thermal management component includes an electronic expansion valve.
  • the electronic expansion valve includes a valve body, a valve member, a sensor, a control portion, and a first seal.
  • the first seal is disposed on the outer periphery of the second cavity.
  • a seal is pressed between the cover body and the valve body; in order to prevent media such as external water from entering the control cavity and affect the working performance of the circuit board, a first seal is provided on the periphery of the control cavity. Improve the sealing of the control cavity where the electronic control board of the electronic expansion valve is located.
  • a manufacturing method of an electronic expansion valve is the aforementioned electronic expansion valve, and the manufacturing method of the electronic expansion valve includes the following steps:
  • the assembled control part is assembled with the valve body, or with a component formed by fixedly connecting the valve member to the valve body, and fixedly connecting the sensor to the valve body.
  • a manufacturing method of an electronic expansion valve includes fixedly connecting the valve member and the valve body, fixedly connecting the sensor to the valve body, and fixedly connecting a formed control part to the valve body. Taking the valve body as a reference, fixing the valve component, the sensor, and the control part to the valve body is conducive to ensuring the manufacturing benchmark, ensuring the reliability of the assembly, simplifying the positioning fixture, and facilitating the assembly process of the electronic expansion valve.
  • Figure 1 is a schematic block diagram of an embodiment of a refrigeration system
  • FIG. 2 is a schematic structural diagram of an embodiment of a thermal management component
  • FIG. 3 is a schematic three-dimensional structure diagram of the electronic expansion valve in the technical solution
  • FIG. 4 is a schematic perspective structural diagram of the electronic expansion valve in another direction in the technical solution.
  • FIG. 5 is a cross-sectional view of the electronic expansion valve in the direction B-B in FIG. 3;
  • FIG. 6 is a schematic cross-sectional structure diagram of the electronic expansion valve in the C-C direction in FIG. 4;
  • FIG. 7 is a cross-sectional view of the electronic expansion valve in the direction A-A of FIG. 3;
  • FIG. 8 is an enlarged schematic view of a partial structure of a portion D in FIG. 7; FIG.
  • FIG. 9 is a schematic perspective view of the valve body in FIG. 3;
  • FIG. 10 is a schematic diagram of the three-dimensional structure of the sensor in FIG. 6; FIG.
  • FIG. 11 is a schematic diagram of one of the assembling steps of the electronic expansion valve
  • FIG. 12 is a schematic diagram of the second assembling step of the electronic expansion valve
  • FIG. 13 is a schematic diagram of the third assembling step of the electronic expansion valve
  • FIG. 14 is a schematic cross-sectional structure diagram of another embodiment of an electronic expansion valve.
  • FIG. 1 is a schematic block diagram of an embodiment of a refrigeration system.
  • the refrigeration system includes an air conditioning system and a battery cooling system.
  • the air conditioning system includes a compressor 100, a condenser 200, a first electronic expansion valve 1, and an evaporator 300. ;
  • the air-conditioning system When the air-conditioning system is in operation, the refrigerant is compressed into a high-temperature and high-pressure refrigerant by the compressor 100.
  • the high-temperature and high-pressure refrigerant is radiated by the condenser 200 and becomes a normal-temperature and high-pressure refrigerant. 1.
  • the refrigerant Enter the evaporator 300; as the pressure of the normal-temperature high-pressure refrigerant decreases after passing through the first electronic expansion valve 1, the refrigerant will vaporize and become a low-temperature refrigerant.
  • the low-temperature refrigerant absorbs a large amount of heat through the evaporator 300 It becomes refrigerant and returns to the compressor 100;
  • the battery cooling system includes a thermal management component, and the refrigerant in the air conditioning system and the working medium of the battery cooling system perform heat exchange in the thermal management component.
  • FIG. 2 is a schematic structural diagram of a specific embodiment of a thermal management component.
  • the thermal management component 400 includes a heat exchanger 500 and a second electronic expansion valve 2.
  • the heat exchanger 500 and the second electronic expansion valve 2 are integrated.
  • the refrigerant in the air conditioning system and the working medium of the battery cooling system perform heat exchange in the heat exchanger 500.
  • the structure of the first electronic expansion valve 1 and the structure of the second electronic expansion valve 2 are the same.
  • the first electronic expansion valve 1 and the second electronic expansion valve 2 are collectively referred to as an electronic expansion valve for description.
  • the structures of the first electronic expansion valve and the second electronic expansion valve may also be different, or the battery cooling system does not use an electronic expansion valve.
  • One of the first electronic expansion valve and the second electronic expansion valve and the electronic expansion valve structure of this technical solution The same are all within the protection scope of this technical solution.
  • the electronic expansion valve 1 includes a control portion 10, a valve body 20, a valve member 40, and a sensor 50.
  • the valve member 40 is fixed to the valve body 20, and the sensor 50 is electrically connected to the control portion 10.
  • the sensor 50 is fixed to the valve body 20, and the control portion 10 and the valve body 20 are fixedly disposed.
  • the control portion 10 and the valve body 20 are fixed by screws 70, and may also be fixed by snapping or bonding.
  • the sensor 50 is integrated in the electronic expansion valve 1 and the valve body 20 limit sensor 50 eliminates the need for a separate mechanical connection for the limit sensor. This structure is simpler, and the sensor pins and the control unit 10 are used at the same time.
  • the electronic expansion valve 1 further includes a first seal 60 disposed between the control portion 10 and the valve body 20 to enhance the seal between the control portion 10 and the valve body 20; the electronic expansion valve further includes a first The groove 103, the first groove 103 is provided in the control part 10 or the valve body 20, the first seal 60 is received in the first groove 103, and the first groove 103 is provided to position or limit the first seal.
  • the valve body 20 includes a first inlet 21, a first outlet 23, and a first channel 27, wherein the first inlet 21 and the first outlet 23 can communicate through the first channel 27.
  • the valve body 20 further includes a second inlet 22, a second outlet 24, and a second channel 28.
  • the second inlet 22 and the second outlet 24 can communicate through the second channel 28; the first channel 27 and the second channel 28 are not connected.
  • the first inlet 21 and the second outlet 24 are provided on the same side of the valve body 20, and the second inlet 22 and the first outlet 23 are provided on the same side of the valve body 20.
  • the first outlet 23 of the electronic expansion valve is connected to the inlet of the heat exchanger 500, and the outlet of the heat exchanger is connected to the second inlet 22 of the electronic expansion valve, which is convenient for the heat exchanger and the electronic expansion valve.
  • the first inlet 21, the second inlet 22, the first outlet 23, and the second outlet 24 can be provided on the same side of the valve body 20, or on different sides of the valve body 20, according to the electronic expansion valve Designed for actual application needs.
  • the first outlet is located upstream of the inlet of the heat exchanger, and the second inlet is located downstream of the outlet of the heat exchanger.
  • the valve body 20 further includes a first mounting portion 25 and a second mounting portion 26.
  • the first mounting portion 25 has a first cavity 250 and the second mounting portion 26 has a second cavity 260.
  • a cavity 250 can communicate with the first channel 27, a second cavity 260 communicates with the second channel 28, and the valve body 20 includes a first side wall 204.
  • the openings of the first cavity 250 and the openings of the second cavity 260 are both formed in the first The side wall 204, or the first side wall is formed with a first cavity 250 and a second cavity 260, or the opening of the first cavity and the opening of the second cavity are located on the first side wall, or the opening of the first cavity and the first The two-chamber opening is located on the same side of the valve body.
  • the first inlet 21 and the second outlet 24 are on the same side of the valve body 20, and the second inlet 22 and the first outlet 23 are on the same side of the valve body 20.
  • the opening of the first cavity 250 and the second cavity 260 are located on the same side of the valve body 20, and the above three sides are different sides of the valve body. This is beneficial to avoid interference, facilitate the miniaturization of the valve body, and improve the use of the valve body. rate.
  • the valve component 40 includes a valve seat 41, a valve core 42, and a rotor assembly 43.
  • the rotor assembly 43 can drive the valve core 42 to move the valve core 42 relative to the valve seat 41.
  • 41 has a valve port 44, and the valve port 44 communicates with the first channel 27 on both sides of the valve port 44.
  • the valve core 42 changes the flow cross-sectional area of the first channel at the valve port 44 by approaching and moving away from the valve port 44.
  • a throttle is formed at the port 44.
  • the valve member 40 further includes a connecting piece 45 and a sleeve 46.
  • the sleeve 46 covers the outer periphery of the rotor assembly 43, the sleeve 46 and the connecting piece 45 are welded and fixed, and the valve seat 41 and the connecting piece 45 are fixedly connected, that is, The sleeve 46 and the valve seat 41 are connected through the connecting member 45, which is helpful to simplify the mold, reduce the size of the mold, and facilitate the forming process of the valve seat.
  • the connecting member 45 can also be integrally formed with the valve seat 41, which does not need to be performed again. Connection settings for both.
  • the connecting member 45 is formed with a flange portion 411.
  • the flange portion 411 includes two surfaces, namely a lower end surface 413 of the flange portion and an upper end surface 412 of the flange portion.
  • the upper end surface 412 of the flange portion faces On the side where the sleeve 46 is located, the lower end surface 413 of the flange portion faces the side where the valve body 20 is located.
  • the first mounting portion 25 includes a first stepped surface 252 and a first side portion 253.
  • the first side portion 253 is more than the first stepped surface 252.
  • the first step surface 252 is disposed near the outside of the valve body, and the axis direction of the main body portion of the first mounting portion 25 is substantially perpendicular.
  • the first side portion 253 is parallel to the axis direction of the main body portion of the first mounting portion 25.
  • the main body portion of the portion 25 refers to a portion where the first cavity is formed, a thread is formed on the surface of the first side portion 253, and the thread formed on the surface of the first side portion 253 is defined as an internal thread.
  • the lower end surface 413 of the flange portion is in contact with the first stepped surface 252.
  • the distance of the outer side of the body 20 can control the length of the valve seat 41 entering the first cavity 250.
  • the electronic expansion valve 1 further includes a second compression nut 641.
  • the second compression nut 641 has a first through hole 6411.
  • a thread is formed on an outer periphery of the second compression nut.
  • the thread formed on the outer periphery of the second compression nut is defined as an outer thread.
  • the thread 6412, the sleeve 46 passes through the first through hole 6411, the second compression nut 641 is provided on the outer periphery of the connecting member 45, and the lower end surface of the second compression nut abuts the upper end surface 412 of the flange portion, and rotates the second
  • the compression nut 641 the external thread of the second compression nut 641 acts on the internal thread of the first side portion 253, the second compression nut 641 presses the flange portion 411 against the valve body 20, the valve member 40 and the valve body 20 Relatively fixed, this helps to ensure that the relative position of the valve member 40 and the valve body 20 does not change, and the installation is convenient and simple.
  • the electronic expansion valve 1 further includes a second seal 540
  • the first mounting portion 250 of the valve body 20 may further include a second step surface 251, the second step surface 251 is substantially parallel to the first step surface 252,
  • the second stepped surface 251 is farther from the first side wall 204 than the first stepped surface 252, that is, the second stepped surface 251 is disposed closer to the bottom of the first cavity 250 than the first stepped surface 252, and the second seal 540 is disposed at
  • the distance between the first stepped surface 252 and the second stepped surface 251 can be set between the second stepped surface 251 and the lower end surface 413 of the flange portion according to the size of the second sealing member 540 and the sealing needs, which is beneficial to avoid acting on
  • the pressing force of the second seal 540 is too large or too small, resulting in a poor sealing effect of the second seal 540 to enhance the seal between the first mounting portion 25 and the valve member 40 and reduce the risk of leakage of the working medium , Thereby improving the sealing performance of the electronic expansion
  • the first stepped surface 252 is provided with a second groove
  • the second seal 540 is provided in the second groove of the first stepped surface 252.
  • the lower end surface 413 of the flange portion is in contact with the second seal 540, and the second
  • the sealing member 540 is compacted
  • the first stepped surface 252 is provided with a second groove, which facilitates the installation of the second sealing member 540, and can also enhance the seal between the first mounting portion 25 and the valve seat 41, and reduce the leakage of the working medium. Risk, thereby improving the sealing performance of the electronic expansion valve.
  • the second groove can also be provided on the side of the flange portion; the depth of the second groove is smaller than the thickness of the second seal, and the second seal is compressed. Between the valve component and the valve body.
  • the control portion 10 includes a cover body 11, an electric control board 12, and a stator assembly 13.
  • the electric control board 12 is electrically connected to the stator assembly 13, or is signal-connected, or is electrically connected and signals.
  • the control part 10 has a control cavity 112.
  • the cover 11 forms at least a part of the control cavity 112.
  • the control cavity 112 is in communication with the second cavity.
  • the electric control board 12 is installed in the control cavity 112.
  • the electric control board 12 can be directed to the stator assembly 13
  • the control signal is output or transmitted to the stator assembly 13; the cover 11 and the stator assembly 13 are integrally formed by injection molding.
  • the stator assembly 13 includes a coil and a first pin 119, and the stator assembly 13 passes the first
  • the pin 119 is electrically connected to the electric control board 12, or is connected with the signal, or is electrically connected and connected with the signal.
  • the coil 11 is formed by insert molding with the first pin 119, etc. as an insert.
  • One end of the first pin 119 is encapsulated in the cover. Body 11, the other end of the first pin 119 is exposed from the cover body 11, and the other end of the first pin 119 exposed from the cover body 11 is plugged and fixed to the electric control board 12 and can be electrically connected, or connected with a signal, or electrically. Signal connection.
  • the control section 10 further includes an interface section 115, through which the electronic expansion valve is electrically connected to the outside world, or is signal-connected, or is electrically and signal-connected.
  • the interface section 115 and the cover 11 are injection-molded and fixed, and the interface section 115 includes a second pin.
  • the interface portion 115 has a mounting cavity 1151, a second pin 116 extends into the mounting cavity, the second pin 116 is injection-molded and fixed to the cover 11, a first end of the second pin 116 extends into the control cavity 112, and the second plug
  • the second end of the pin 116 extends into the mounting cavity 1151, and at least part of the middle of the second pin 116 is injection-molded and fixed to the cover 11; the first end of the second pin 116 is fixed to the electrical control board 12 by pressing or crimping.
  • the second ends of the two pins 116 extend into the mounting cavity 1151, and the electronic control board 12 can be connected to at least one of a power source and a control signal external to the electronic expansion valve through the second pins 116.
  • the electric control board 12 has a first socket 122 and a second socket 125, a first pin 119 is inserted into the first socket 122, a second pin 116 is inserted into the second socket 125, and the first pin 119 and the second socket
  • the pin 116 and the electric control board 12 may be connected by welding or by press-fitting.
  • the electric control board 12 is relatively fixed to the cover 11 through the first pin 119 and the second pin 116.
  • the stator assembly 13 and the cover 11 are integrally assembled with the electric control board 12 to form the first part of the control part by injection molding.
  • the stator assembly 13 is sleeved on the outer periphery of the rotor assembly 43.
  • the opening direction of the second cavity 260 is defined to be upward, and the opening direction of the second cavity 260 is opposite to The direction is downward.
  • the surface above the electrical control board 12 is the first surface 123 of the electrical control board, and the side opposite to the first surface 123 of the electrical control board is the second surface 124 of the electrical control board, or in other words, along the second In the axial direction of the mounting portion 26, the second surface 124 of the electric control board is closer to the first side wall 204 than the first surface 123 of the electric control board. It can be known that the electronic components of the electric control board 12 are disposed on the first side of the electric control board.
  • One side or the second side of the electric control board is disposed between the second mounting portion 26 and the cover 11; or in other words, the first surface 123 of the electric control board faces an inner wall 113 of the cover, The second surface 124 of the electric control board faces the first side wall 204 provided with the second mounting portion 26 and the sensor 50, or the cover 11 and the electric control board 12 are not provided between the electric control board 12 and the valve body 20.
  • the electric control board 12 is placed in the control cavity 112 from the side of the cover corresponding to the valve body 20.
  • the pin 116 is crimped, which facilitates the installation of the electronic control board and the assembly of the electronic expansion valve.
  • the electronic control board 12 and the stator assembly 13 are disposed on the same side of the first side wall 204, and the structure of the electronic expansion valve is relatively compact.
  • the senor 50 is fixedly disposed with the valve body 20, one end of the sensor 50 is fixed with the second mounting portion 26, and a part of the sensor 50 extends into the second cavity 260.
  • the senor 50 includes a main body 51, a sensor head 52, and a connecting portion 53, the sensor head 52 is fixedly disposed with the body 51, the sensor head 52 is located in the second channel 28 or the second cavity 260, and the sensor head 52 can sense the second channel 28 or the relevant parameters of the working medium in the second cavity 260, such as at least one of the temperature and pressure of the working medium.
  • the electric control board 12 and the sensor 50 are electrically or signally connected, or are electrically and signally connected through the connecting portion 53.
  • One end of the connecting portion 53 is provided to expose the first end of the body, and the sensor head 52 is provided to expose the second end of the body 51.
  • the first end of the main body 51 and the second end of the main body are located at different ends of the main body.
  • One end of the connecting portion 53 is enclosed in the main body 51 and is electrically connected to the sensor head 52, or is connected to a signal, or is electrically connected and connected to a signal.
  • the other end of 53 exposes the main body 51 and is electrically connected to the electrical control board 12, or is electrically connected, or electrically connected and signal connected. Since the electrical control board 12 is disposed in the control cavity 112, at least part of the connection portion 53 is located in the control cavity 112.
  • the second surface 124 of the electrical control board is provided with a first contact portion 121;
  • the first contact portion 121 includes a conductive layer formed on the second surface 124 of the electrical control plate, wherein the conductive layer may be plated Tin layer, electroless nickel plating, gold immersion, or conductive metal sheet fixedly connected to the electric control board;
  • the first abutment portion 121 is electrically connected to the electric control circuit, and the sensor connection portion 53 is connected to the first abutment portion 121 is abutted and can be electrically connected, or is connected with a signal, or is electrically connected and connected with a signal, or the connection part 53 is fixedly connected with and electrically connected with the first abutment part, or is connected with a signal, or is electrically connected with a signal;
  • 50 is in contact with the electric control board 12 through the first abutting portion 121, which can reduce the wiring arrangement relatively, and does not need to provide a plug hole in the electric control board 12, which is beneficial to the arrangement of electric elements on the
  • the sensor includes five connecting portions 53, which is helpful to improve the connection reliability between the connecting portion and the electric control board.
  • the sensor 50 further includes a conductive plate 54, which is made of a conductive material.
  • the conductive plate 54 is encapsulated in the body 51, and the first end of the connecting portion 53 is fixedly connected to the conductive plate 54, including surface-to-surface welding, welding after plugging, or interference plug fixing and electrical connection, or signal connection, or electrical connection And the signal connection; the sensor head 52 and the conductive plate 54 are welded and fixedly connected or plugged in, and the connecting portion 53 is electrically connected to the sensor head 52 through the conductive plate 54 or is signal-connected or electrically connected and signal-connected, so that the conductive plate is the connecting portion And sensor heads provide support.
  • the position of the connecting portion and the conductive plate can also be defined by the body, that is, the connecting portion is in contact with the conductive plate and is electrically connected, or is connected with a signal, or is electrically connected with the signal, and the connecting portion and the conductive plate are fixedly connected by the body;
  • the position of the plate and the induction head, that is, the conductive plate is electrically connected with the induction head, or is connected with a signal, or is electrically connected with the signal, and the conductive plate and the induction head are fixedly connected through the body.
  • a conductive plate may not be provided.
  • connection part is electrically connected to the induction head, or is connected to the signal, or is electrically connected and connected to the signal.
  • the connection part is fixedly connected to the induction head or the connection part is connected to the induction head through the body. Fixed connection; this way, the structure of the sensor is simpler.
  • the connecting portion 53 is an elastic element, such as a spring, a spring, a leaf spring, etc.
  • the connecting portion 53 is used as a spring.
  • Compression deformation with the conductive member 54 causes the connecting portion 53 to undergo elastic deformation, or the length of the elastic element between the electrical control board and the sensor is shorter than the length of the elastic element in the natural state, which facilitates the contact between the connecting portion 53 and the electrical control board 12 more reliable.
  • a receiving cavity is formed in the body, and a part of the connecting portion is received in the receiving cavity. The other portion of the connecting portion exposes the body.
  • the connecting portion 53 abuts the electric control board 12 and the electric control board 12 deforms.
  • the cover 11 is provided with a supporting portion 101.
  • the supporting portion 101 projects relatively from the inner wall 113 of the cover body and protrudes toward the electric control board 12.
  • the supporting portion 101 is located above the electric control board 12 along the axial direction of the second mounting portion 26.
  • One side 123 is substantially vertical, and the supporting portion 101 is in contact with the first surface 123 of the electric control board.
  • the supporting portion 101 and the connecting portion 53 are located on both sides of the electric controlling plate 12, respectively.
  • the supporting portion 101 is used to cancel the connecting portion 53 acting on the electric control.
  • the electric control plate 12 includes five first abutting portions 121, the cover 11 includes two supporting portions 101, and the first abutting portion 121 surrounds to form a first region.
  • the supporting portion 101 It is supported at the center of the first area to facilitate the relative stability of the electric control board 12.
  • the body 51 further includes a limiting portion 512, which is a non-rotating body, the limiting portion 512 includes a limiting surface 535, and the limiting surface 535 is distributed along the circumferential direction of the limiting portion 512; accordingly,
  • the second mounting portion 26 includes a mating portion 264.
  • the mating portion 264 includes a mating surface.
  • the mating surface is formed on a side wall of the second mounting portion.
  • the body 51 further includes a main body portion 511, and the conductive plate 54 is fixedly disposed with the main body portion 511.
  • the limiting portion 512 protrudes from the outer edge of the main body portion 511 and extends along the first portion.
  • the electronic expansion valve further includes a first pressing nut, and the first pressing nut is pressed against the limiting portion 512 and protrudes from the main body portion. section.
  • the limiting portion 512 includes a limiting surface 535, a lower end surface 534 of the limiting portion, and an upper end surface 533 of the limiting portion.
  • the limiting surface 535 is distributed along the circumferential direction of the limiting portion 512 and along the axis of the sensor. In the direction, the lower end surface 534 of the stopper portion is located on one side of the stopper portion 512, and the upper end surface 533 of the stopper portion is located on the other side of the stopper portion 512.
  • the limiting surface 535 includes an arc surface and a plane. It can be known that when the limiting portion 512 is located in the second cavity 260, the sensor cannot rotate because the limiting portion is a non-rotating body.
  • the structure of the limiting portion can be various, as long as it can prevent the sensor from rotating, such as a square, oval or other shape of the limiting portion.
  • the second mounting portion 26 includes a third stepped surface 263, an abutting surface 262, and a second side portion 265.
  • the mating surface is located between the third stepped surface 263 and the abutting surface 262 along the axial direction of the second mounting portion 26.
  • the third stepped surface 263 is closer to the first side wall 204 than the abutting surface 262, and the second side portion 265 is closer to the first side wall 204 than the third stepped surface 263; the third stepped surface 263, the abutting surface 262, and the second
  • the axis direction of the mounting portion 26 is substantially vertical.
  • the mating surface and the second side portion 265 are substantially parallel to the axis of the second mounting portion 26.
  • the second side portion 265 has internal threads, and the lower end surface 534 of the stopper portion abuts against the abutment surface 262.
  • the electronic expansion valve includes a first compression nut 541, the first compression nut 541 is sleeved on the main body portion 511, and a lower end surface of the first compression nut and a limiting portion The upper end surface of the first compression nut is in contact with the thread.
  • the second mounting portion includes a threaded portion. The threaded portion is located farther away from the bottom of the second mounting portion than the mating portion. The first pressing with the screw portion of the second side portion 265 of the second mounting portion 541 female compression limiting portion 512, thereby connecting the sensor 50 and the valve body 20.
  • the electronic expansion valve further includes a third seal 520, which is disposed between the bottom of the second mounting portion and the sensor.
  • the third seal is used to form a seal structure between the sensor and the valve body. Prevent the working medium in the second channel from entering the control chamber through the gap between the sensor and the valve body.
  • the third sealing member 520 is disposed on the bottom of the second mounting portion and forms a limit on the mating surface. The distance from the abutting surface to the bottom of the second mounting portion is smaller than the thickness of the third sealing member. The three seals 520 are in contact with each other, pressing the third seal 520 against the bottom of the second mounting portion.
  • the compression amount of the third seal is controlled, which is beneficial to avoid the effect.
  • the pressing force of the third seal 520 is too large or too small, resulting in a poor sealing effect of the third seal 520 to enhance the seal between the second mounting portion 26 and the sensor 50 and reduce the leakage of the working medium to the control Cavity, thereby improving the sealing of the electronic expansion valve and reducing the risk of internal leakage; it can be known that the third seal can also be placed between the limit surface and the valve body, that is, a third The third seal is clamped in the third groove, and the limiting surface or the valve body of the third groove is not provided to press the third seal.
  • a third groove or a stepped portion is formed on the lower end surface of the limiting portion of the sensor; or a third groove is formed on the abutting surface of the second mounting portion, and the third seal is caught in the third groove, The depth of the third groove is smaller than the thickness of the third seal, and the third seal is pressed between the lower end surface of the limit portion of the sensor and the valve body.
  • the cover body 11 further includes a first ring portion 117.
  • the first ring portion 117 is formed near the outer edge of the cover body 11 of the control portion, or the first ring portion 117 surrounds the outer periphery of the control cavity.
  • the first ring portion 117 abuts the first side wall 204 of the valve body; the electronic expansion valve further includes a first seal 60 that surrounds the control cavity.
  • the first seal 60 is disposed between the first side wall 204 and the first ring portion 117.
  • the cover 11 presses the first seal 60 against the valve body 20, so that the cover 11 can be strengthened.
  • the seal with the valve body 20 reduces the leakage of the working medium to the outside of the electronic expansion valve through the connection between the cover and the valve body, or the external medium enters the inside of the electronic expansion valve through the connection between the cover and the valve body, improving the electronic
  • the first ring portion 117 is disposed near the peripheral side of the cover 11.
  • the opening of a cavity 250, the opening of a second cavity 260, and the first ring portion 11 7 projections on a plane perpendicular to the perimeter form a first projection, a second projection, a third projection, the first projection and the second projection are located in the area surrounded by the third projection, that is, the first seal is located in the opening of the first cavity And the periphery of the opening of the second cavity, in this way, after the first ring portion is relatively fixed with the valve body, the external working medium can be prevented from entering the control cavity.
  • the first seal 60 surrounds the second The opening of the cavity 260 is provided. After the first ring portion is connected to the valve body, the cover body presses the first seal against the valve body. In this way, after the first ring portion and the valve body are relatively fixed, the control cavity can be sealed. Part of the first seal is provided between the opening of the first cavity and the opening of the second cavity, and the working medium entering the first cavity can also be prevented from entering the control cavity, and the first seal is not provided on the outer periphery of the opening of the first cavity; It is beneficial to miniaturize the first seal.
  • the first pin 119 and the second pin 116 are integrally injection-molded with the cover 11.
  • the electric control board 12 is assembled, the electric control board 12 is pressed against the first pin 119 and the second pin 116.
  • a pin 119 and a second pin 116 are fixed by welding or welding.
  • the opening of the control cavity of the cover body faces the valve body.
  • the electrical control board is placed in the control cavity from the opening of the control cavity of the cover body.
  • the cover body 11 and the stator assembly One piece.
  • the cover 11 also includes a first shell and a second shell. The first shell is separately formed, and the second shell is integrally formed with the stator assembly. In this way, the opening of the control chamber faces away from the valve body, and the electric control board is placed in the control from the opening of the control chamber.
  • the cavity is fixedly connected with the first pin and the second pin, and then the first shell and the second shell are fixed and sealed, such as by laser welding.
  • the second shell includes a first ring portion, and the second shell is formed with a first pin.
  • a communication hole, the first ring portion surrounds the outer periphery of the first communication hole, the first seal member surrounds the outer periphery of the first communication hole, and the second shell presses the first seal member against the valve body.
  • the electronic expansion valve further includes a first groove 103, and the first groove 103 may be provided on the first ring portion 117; the first groove 103 may also be provided on the valve body 20, that is, the wall of the first groove Is a part of the first side wall 204, or the first side wall 204 includes a wall of a first groove, and the first groove 103 is disposed opposite the first ring portion 117; the first seal 60 is provided on the first groove 103 The depth of the first groove is smaller than the height of the first seal.
  • the electronic expansion valve may further include at least one latching slot 105, and each latching slot and the first groove 103 are jointly provided in a first ring portion of the valve body or the cover body, and each latching slot 105 and the first The grooves 103 communicate with each other.
  • the first seal member 60 further includes at least one protrusion 601. Each protrusion 601 of the first seal member is in interference fit with the corresponding slot 105.
  • the cover 11 further includes a limit pin 102, and the number of the limit pins is two or more.
  • the cover includes two limit pins 102, each Limit pins 102 are fixedly connected to the first ring portion 117. Each limit pin 102 projects toward the valve body 20 relative to the first ring portion 117. Each limit pin 102 is disposed near the outer edge of the first ring portion 117, or every Positioning pins are located outside the first groove; the valve body 20 includes positioning holes 202, and the number of positioning holes 202 is the same as the number of positioning pins 102.
  • Each of the positioning pins 102 is inserted into the positioning hole 202, and the control portion 10 and The relative position of the valve body 20 can prevent the control portion 10 from being offset relative to the valve body 20 during assembly, so that the fixed connection between the control portion 10 and the valve body 20 is accurate and easy to assemble.
  • the limit pin can also be provided on the valve body, and the corresponding limit hole is provided on the cover body.
  • the electronic expansion valve further includes a fastening device 70.
  • the fastening device 70 may be a bolt or a screw.
  • the cover 11 includes a second communication hole 104, and the second communication hole 104 is close to the outer edge of the first ring portion 117. It is provided that the second communication hole 104 penetrates the first ring portion 117, the valve body 20 includes a threaded hole 203, and the fastening device 70 passes through the second communication hole 104 and the threaded hole 203 to fixedly connect the control portion 10 and the valve body 20.
  • the number of the second communication holes is two or more, and the number of the screw holes is the same as the number of the second communication holes, so that the first seal 60 is pressed tightly, so that the control portion 10 and the valve body 20 can be integrated into A whole, and can ensure the tightness, waterproofness and dustproofness between the valve body 20 and the control portion 10, effectively prevent the invasion of external water or dust and the leakage of the internal working medium, and play a role of overall sealing.
  • the electronic expansion valve includes a control part, a valve body, a valve part, and a sensor.
  • the control part includes a cover body, a stator assembly, an electric control board, and a cover body. It is integrated with the stator assembly by injection molding.
  • the manufacturing method of the electronic expansion valve includes the following steps:
  • the first part of the control part is formed by injection molding the stator assembly, the first pin, and the second pin as inserts to form the first part including the cover body;
  • the assembly of the electric control board and the first part, the electric control board is fixedly connected to the first pin and the second pin;
  • valve parts and the valve body are fixedly connected
  • valve components include a valve seat, a valve core, a sleeve, a connector, and a rotor assembly.
  • the rotor component and the valve core are assembled inside the sleeve, and the sleeve is welded and fixed with the connector.
  • the seat and the connecting piece are fixed by welding.
  • the forming of the sensor is also included.
  • the sensor includes a connecting portion, a conductive plate, a body, and a sensing head.
  • the connecting portion includes an elastic element, the elastic element is in contact with the conductive plate, and the sensing head is in contact with the conductive plate.
  • the sensor head is a sensor including a body formed by insert molding through injection molding.
  • Step a2 includes: placing a second seal in the first cavity, then placing the valve component in the first cavity, and fixing the valve component and the valve body through a second compression nut.
  • Step a3 also includes placing a third seal in the second cavity, limiting the limit portion of the sensor and the mating portion of the valve body, placing the sensor in the second cavity of the valve body, and placing the sensor through the first compression nut. It is fixed with the valve body.
  • Step a4 further includes: placing the first seal in the first groove, inserting the limit pin into the positioning hole of the valve body, and fixedly connecting the control part with the valve body through a fastening device.
  • Step a4 includes: the sensor is electrically connected to the electric control board, or the signal is connected, or the electric connection and the signal are connected, the connection part of the sensor is abutted with the first contact part of the electric control board, and the electric control board compresses the sensor connection part.
  • the elastic element is deformed for a set length.
  • the electronic expansion valve includes a control part, a valve body, a valve part, and a sensor.
  • the control part includes a cover body, a stator assembly, and an electric control board.
  • the cover body includes a first shell and a second shell.
  • the stator assembly is integrally formed, a control cavity is formed between the first shell and the second shell, and the manufacturing method of the electronic expansion valve includes the following steps:
  • the first part of the control part is formed by injection molding the stator assembly, the first pin, and the second pin as inserts to form the first part including the second shell;
  • the electric control board is fixedly connected to the first pin and the second pin;
  • the first shell and the second shell are fixedly connected;
  • valve parts and the valve body are fixedly connected
  • the thermal management component includes an electronic expansion valve.
  • the electronic expansion valve includes a valve body, a sensor, and a control part.
  • the control part includes an electric control board.
  • the sensor and the valve body are fixedly disposed.
  • the sensor is electrically connected to the control board, or the signal is connected. , Or electrical connection and signal connection, and abutment setting, compared to pin welding, it is beneficial to relieve stress; the sensor and control section directly contact does not require a wiring harness, which is beneficial to the integration of the refrigeration system; the sensor and the valve body are directly fixed, there are It is beneficial to simplify the structure and make the structure compact.
  • the thermal management component includes an electronic expansion valve.
  • the electronic expansion valve includes a valve body, a valve member, a sensor, a control portion, and a first seal.
  • the first seal is disposed on the outer periphery of the second cavity.
  • the first seal The components are pressed between the cover and the valve body; in order to prevent external water and other media from entering the control cavity and affect the working performance of the circuit board, a first seal is provided on the periphery of the control cavity, which is beneficial to improve the electronics The tightness of the control chamber where the electronic control board of the expansion valve is located.
  • a method for manufacturing an electronic expansion valve includes fixedly connecting the valve component to the valve body, fixedly connecting the sensor to the valve body, and fixedly connecting a formed control portion to the valve body.
  • the manufacturing method uses the valve body as a reference, and fixes the valve component, the sensor, and the control part to the valve body, which is helpful for ensuring the manufacturing standard, ensuring the reliability of the assembly, simplifying the positioning fixture, and facilitating the electronic expansion valve assembly process.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

An electronic expansion valve, a manufacturing method thereof, and a thermal management assembly. The electronic expansion valve (1) comprises a valve body (20), a valve component (40), and a control portion (10). The valve component (40) comprises a valve seat (41), a valve core (42), and a rotor assembly (43). A valve opening (44) is formed at the valve seat (41). The rotor assembly (43) can drive the valve core (42) to move relative to the valve seat (41), and the movement of the valve core (42) relative to the valve seat (41) can adjust the degree of opening of the valve opening (44). The control portion (10) comprises a cover (11), a stator assembly (13), and an electric control board (12). The stator assembly (13) and the electric control board (12) are electrically connected, or are in signal connection, or are electrically connected and in signal connection. The electronic expansion valve (1) further comprises a sensor (50). The control portion (10) has a control cavity (112). The electric control board (12) is placed in the control cavity (112), and part of the sensor (50) is located in the control cavity (112). The sensor (50) is fixedly connected to the valve body (20), and abuts the electric control board (12).

Description

电子膨胀阀及其制造方法、热管理组件Electronic expansion valve, manufacturing method thereof, and thermal management component
本公开要求在2018年07月20日提交中国专利局、申请号为201810801473.X、201810801389.8和201810801412.3的中国专利申请的优先权,以上申请的全部内容通过引用结合在本公开中。This disclosure claims priority from Chinese patent applications filed with the Chinese Patent Office on July 20, 2018, with application numbers of 201810801473.X, 201810801389.8, and 201810801412.3, the entire contents of which are incorporated herein by reference.
技术领域Technical field
本文涉及流体控制技术领域,例如涉及一种电子膨胀阀及其制造方法、热管理组件。This document relates to the field of fluid control technology, for example, to an electronic expansion valve, a manufacturing method thereof, and a thermal management component.
背景技术Background technique
制冷系统包括压缩机、蒸发器、冷凝器以及节流元件,通常采用膨胀阀作为节流元件,为了提高控制精度通常采用电子膨胀阀作为节流元件,电子膨胀阀可用于节流制冷系统的工作介质(比如:制冷剂),电子膨胀阀是一种可电控器件,制冷系统还在蒸发器的出口管路设置传感器以采集蒸发器出口工作介质的相关参数,传感器通过线束与控制单元连接,控制单元获取相关参数后根据相应的控制程序调节电子膨胀阀的开度。这样,涉及传感器的机械连接以及电连接,导致结构相对复杂。传感器和电子膨胀阀的阀体分别与制冷系统连接,这样,装配的基准不统一,组装工艺相对复杂。The refrigeration system includes a compressor, an evaporator, a condenser, and a throttling element. Generally, an expansion valve is used as the throttling element. In order to improve the control accuracy, an electronic expansion valve is usually used as the throttling element. The electronic expansion valve can be used to throttling the refrigeration system. Medium (such as refrigerant), the electronic expansion valve is an electronically controllable device, the refrigeration system also sets a sensor at the outlet of the evaporator to collect the relevant parameters of the working medium at the outlet of the evaporator, the sensor is connected to the control unit through the wiring harness, After obtaining the relevant parameters, the control unit adjusts the opening degree of the electronic expansion valve according to the corresponding control program. In this way, the mechanical connection and electrical connection of the sensor are involved, resulting in a relatively complicated structure. The sensor and the valve body of the electronic expansion valve are respectively connected to the refrigeration system. In this way, the basis of assembly is not uniform, and the assembly process is relatively complicated.
发明内容Summary of the invention
本文提供了一种电子膨胀阀及其制造方法、热管理组件,以有利于简化结构,并有利于实现组装方便简单,且保证装配的可靠性。This article provides an electronic expansion valve, its manufacturing method, and a thermal management component to help simplify the structure, facilitate the assembly and facilitate assembly, and ensure the reliability of the assembly.
一种电子膨胀阀,包括阀体、阀部件、控制部以及传感器,所述阀体包括第一安装部以及第二安装部,所述阀体具有第一通道、第二通道,所述第一安装部具有第一腔,所述第二安装部具有第二腔,所述第一腔与所述第一通道连通,所述第二腔与所述第二通道连通;所述阀部件包括阀座、阀芯及转子组件,所述阀座形成有阀口,所述转子组件能够带动所述阀芯相对所述阀座运动,所述阀芯相对所述阀座运动能够调节所述阀口的开度;至少部分所述阀座位于所述第一腔,至少部分所述传感器位于所述第二腔;所述控制部包括罩体、定子组件以及电控板,所述定子组件与所述电控板电连接,或信号连接,或电连接且信号连接,所述传感器与所述电控板电连接,或信号连接,或电连接且信号 连接;所述控制部具有控制腔,所述罩体形成至少部分所述控制腔,所述电控板置于所述控制腔,部分所述传感器位于所述控制腔,所述控制腔和所述第二腔连通设置,所述传感器与所述阀体固定连接,所述传感器与所述电控板抵接。An electronic expansion valve includes a valve body, a valve member, a control portion, and a sensor. The valve body includes a first mounting portion and a second mounting portion. The valve body has a first passage, a second passage, and the first The mounting portion has a first cavity, the second mounting portion has a second cavity, the first cavity is in communication with the first channel, and the second cavity is in communication with the second channel; the valve member includes a valve A seat, a valve core, and a rotor assembly, wherein the valve seat is formed with a valve port, and the rotor assembly can drive the valve core to move relative to the valve seat, and the movement of the valve core relative to the valve seat can adjust the valve port At least part of the valve seat is located in the first cavity and at least part of the sensor is located in the second cavity; the control part includes a cover body, a stator assembly, and an electric control board, and the stator assembly and the The electric control board is electrically connected, or signal connected, or electrically connected and signal connected, the sensor is electrically connected to the electric control board, or is signal connected, or is electrically connected and signal connected; the control section has a control cavity, so Said cover forming at least part of said control Cavity, the electric control board is placed in the control cavity, part of the sensor is located in the control cavity, the control cavity is in communication with the second cavity, and the sensor is fixedly connected to the valve body, the The sensor is in contact with the electric control board.
一种热管理组件,包括电子膨胀阀和换热器,所述电子膨胀阀与所述换热器固定连接,电子膨胀阀为如上所述的电子膨胀阀;所述阀体包括第一进口、第二进口、第一出口和第二出口,第一通道连通第一出口和第一进口,第二通道连通第二出口和第二进口,所述第一出口与所述换热器的进口连通,所述第二进口与所述换热器的出口连通,所述换热器的进口通过所述换热器的第三通道与所述换热器的出口连通。A thermal management component includes an electronic expansion valve and a heat exchanger, the electronic expansion valve is fixedly connected to the heat exchanger, the electronic expansion valve is an electronic expansion valve as described above, and the valve body includes a first inlet, The second inlet, the first outlet, and the second outlet, the first channel communicates with the first outlet and the first inlet, the second channel communicates with the second outlet and the second inlet, and the first outlet communicates with the inlet of the heat exchanger The second inlet is in communication with the outlet of the heat exchanger, and the inlet of the heat exchanger is in communication with the outlet of the heat exchanger through a third channel of the heat exchanger.
电子膨胀阀以及热管理组件,热管理组件包括电子膨胀阀,电子膨胀阀包括阀体、阀部件、传感器、控制部以及第一密封件,第一密封件设置于第二腔外周,所述第一密封件被压紧于所述罩体和所述阀体之间;为了阻止外部水等介质进入控制腔,影响电路板的工作性能,在控制腔外周设置第一密封件,这样设置有利于提高电子膨胀阀的电控板所在控制腔的密封性。An electronic expansion valve and a thermal management component. The thermal management component includes an electronic expansion valve. The electronic expansion valve includes a valve body, a valve member, a sensor, a control portion, and a first seal. The first seal is disposed on the outer periphery of the second cavity. A seal is pressed between the cover body and the valve body; in order to prevent media such as external water from entering the control cavity and affect the working performance of the circuit board, a first seal is provided on the periphery of the control cavity. Improve the sealing of the control cavity where the electronic control board of the electronic expansion valve is located.
一种电子膨胀阀的制造方法,所述电子膨胀阀为前述的电子膨胀阀,该电子膨胀阀的制造方法包括以下步骤:A manufacturing method of an electronic expansion valve, the electronic expansion valve is the aforementioned electronic expansion valve, and the manufacturing method of the electronic expansion valve includes the following steps:
组装所述控制部;Assembling the control section;
将所述阀部件与所述阀体固定连接;Fixedly connecting the valve component with the valve body;
将所述传感器与所述阀体固定连接;Fixedly connecting the sensor to the valve body;
将组装成形的控制部,与所述阀体组装,或者与通过将所述阀部件与所述阀体固定连接,并将所述传感器与所述阀体固定连接形成的组件组装。The assembled control part is assembled with the valve body, or with a component formed by fixedly connecting the valve member to the valve body, and fixedly connecting the sensor to the valve body.
一种电子膨胀阀的制造方法,包括将所述阀部件与所述阀体固定连接,将所述传感器与所述阀体固定连接,将成形的控制部与阀体固定连接,这样该制造方法以阀体为基准,将阀部件、传感器以及控制部与阀体固定,有利于保证制造基准,保证装配的可靠性,简化定位夹具,有利于简化电子膨胀阀组装工艺。A manufacturing method of an electronic expansion valve includes fixedly connecting the valve member and the valve body, fixedly connecting the sensor to the valve body, and fixedly connecting a formed control part to the valve body. Taking the valve body as a reference, fixing the valve component, the sensor, and the control part to the valve body is conducive to ensuring the manufacturing benchmark, ensuring the reliability of the assembly, simplifying the positioning fixture, and facilitating the assembly process of the electronic expansion valve.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是制冷系统的一种实施方式示意框图;Figure 1 is a schematic block diagram of an embodiment of a refrigeration system;
图2是热管理组件的一种实施方式的结构示意图;2 is a schematic structural diagram of an embodiment of a thermal management component;
图3是本技术方案中电子膨胀阀的一个方向立体结构示意图;FIG. 3 is a schematic three-dimensional structure diagram of the electronic expansion valve in the technical solution;
图4是本技术方案中电子膨胀阀的另一个方向立体结构示意图;FIG. 4 is a schematic perspective structural diagram of the electronic expansion valve in another direction in the technical solution; FIG.
图5是图3中电子膨胀阀的B-B方向截面结构示意图;5 is a cross-sectional view of the electronic expansion valve in the direction B-B in FIG. 3;
图6是图4中电子膨胀阀的C-C方向截面结构示意图;6 is a schematic cross-sectional structure diagram of the electronic expansion valve in the C-C direction in FIG. 4;
图7是图3中电子膨胀阀的A-A方向截面结构示意图;7 is a cross-sectional view of the electronic expansion valve in the direction A-A of FIG. 3;
图8是图7中D部的局部结构放大示意图;FIG. 8 is an enlarged schematic view of a partial structure of a portion D in FIG. 7; FIG.
图9是图3中阀体的立体结构示意图;9 is a schematic perspective view of the valve body in FIG. 3;
图10是图6中传感器的立体结构示意图;FIG. 10 is a schematic diagram of the three-dimensional structure of the sensor in FIG. 6; FIG.
图11是电子膨胀阀的组装步骤之一的示意图;11 is a schematic diagram of one of the assembling steps of the electronic expansion valve;
图12是电子膨胀阀的组装步骤之二的示意图;12 is a schematic diagram of the second assembling step of the electronic expansion valve;
图13是电子膨胀阀的组装步骤之三的示意图;13 is a schematic diagram of the third assembling step of the electronic expansion valve;
图14是电子膨胀阀另一种实施方式的截面结构示意图。14 is a schematic cross-sectional structure diagram of another embodiment of an electronic expansion valve.
具体实施方式detailed description
下面结合附图和具体实施方式对本文作进一步说明:The following further describes this document with reference to the drawings and specific embodiments:
图1为制冷系统一种实施方式的示意框图,在本实施例中,制冷系统包括空调系统和电池冷却系统,空调系统包括压缩机100、冷凝器200、第一电子膨胀阀1以及蒸发器300;空调系统工作时,制冷剂通过压缩机100被压缩为高温高压的制冷剂,高温高压的制冷剂通过冷凝器200散热后成为常温高压的制冷剂,常温高压的制冷剂通过第一电子膨胀阀1,进入蒸发器300;由于常温高压的制冷剂经过第一电子膨胀阀1后压力减小,制冷剂就会汽化,变成低温的制冷剂,低温的制冷剂经过蒸发器300吸收大量的热量变成制冷剂并回到压缩机100;电池冷却系统包括热管理组件,空调系统中的制冷剂与电池冷却系统的工作介质在热管理组件中进行热交换。FIG. 1 is a schematic block diagram of an embodiment of a refrigeration system. In this embodiment, the refrigeration system includes an air conditioning system and a battery cooling system. The air conditioning system includes a compressor 100, a condenser 200, a first electronic expansion valve 1, and an evaporator 300. ; When the air-conditioning system is in operation, the refrigerant is compressed into a high-temperature and high-pressure refrigerant by the compressor 100. The high-temperature and high-pressure refrigerant is radiated by the condenser 200 and becomes a normal-temperature and high-pressure refrigerant. 1. Enter the evaporator 300; as the pressure of the normal-temperature high-pressure refrigerant decreases after passing through the first electronic expansion valve 1, the refrigerant will vaporize and become a low-temperature refrigerant. The low-temperature refrigerant absorbs a large amount of heat through the evaporator 300 It becomes refrigerant and returns to the compressor 100; the battery cooling system includes a thermal management component, and the refrigerant in the air conditioning system and the working medium of the battery cooling system perform heat exchange in the thermal management component.
图2为热管理组件的一种具体实施方式的结构示意图,本实施例中,热管理组件400包括换热器500和第二电子膨胀阀2,换热器500和第二电子膨胀阀2集成为一个整体,空调系统中的制冷剂与电池冷却系统的工作介质在换热器500中进行热交换,本实施例中,第一电子膨胀阀1的结构和第二电子膨胀阀2的结构相同,以下将第一电子膨胀阀1和第二电子膨胀阀2统称为电子膨胀阀进行描述。当然第一电子膨胀阀和第二电子膨胀阀的结构也可以不同,或者电池冷却系统不使用电子膨胀阀,第一电子膨胀阀和第二电子膨胀阀之一与本技术方案的电子膨胀阀结构相同均在本技术方案的保护范围内。FIG. 2 is a schematic structural diagram of a specific embodiment of a thermal management component. In this embodiment, the thermal management component 400 includes a heat exchanger 500 and a second electronic expansion valve 2. The heat exchanger 500 and the second electronic expansion valve 2 are integrated. As a whole, the refrigerant in the air conditioning system and the working medium of the battery cooling system perform heat exchange in the heat exchanger 500. In this embodiment, the structure of the first electronic expansion valve 1 and the structure of the second electronic expansion valve 2 are the same. Hereinafter, the first electronic expansion valve 1 and the second electronic expansion valve 2 are collectively referred to as an electronic expansion valve for description. Of course, the structures of the first electronic expansion valve and the second electronic expansion valve may also be different, or the battery cooling system does not use an electronic expansion valve. One of the first electronic expansion valve and the second electronic expansion valve and the electronic expansion valve structure of this technical solution The same are all within the protection scope of this technical solution.
参见图3至图6,在一些实施例中,电子膨胀阀1包括控制部10、阀体20、阀部件40和传感器50,阀部件40与阀体20固定,传感器50与控制部10电连接,传感器50与阀体20固定,控制部10和阀体20固定设置,本实施例中,控制部10和阀体20通过螺钉70固定,也可以通过卡扣或者粘接的方式固定。这样,将传感器50集成于电子膨胀阀1,借助阀体20限位传感器50,不需要单独设置用于限位传感器的机械连接部,这样结构更加简单,同时利用传感器的引脚与控制部10连接,不需要单独设置线束将传感器的信号传递至控制器。电子膨胀阀1还包括第一密封件60,第一密封件60设置于控制部10与阀体20之间,以增强控制部10与阀体20之间的密封;电子膨胀阀还包括第一凹槽103,第一凹槽103设置于控制部10或阀体20,第一密封件60容置于第一凹槽103,第一凹槽103设置为对第一密封件定位或限位。3 to 6, in some embodiments, the electronic expansion valve 1 includes a control portion 10, a valve body 20, a valve member 40, and a sensor 50. The valve member 40 is fixed to the valve body 20, and the sensor 50 is electrically connected to the control portion 10. The sensor 50 is fixed to the valve body 20, and the control portion 10 and the valve body 20 are fixedly disposed. In this embodiment, the control portion 10 and the valve body 20 are fixed by screws 70, and may also be fixed by snapping or bonding. In this way, the sensor 50 is integrated in the electronic expansion valve 1 and the valve body 20 limit sensor 50 eliminates the need for a separate mechanical connection for the limit sensor. This structure is simpler, and the sensor pins and the control unit 10 are used at the same time. Connection, no need to set a separate wire harness to pass the signal from the sensor to the controller. The electronic expansion valve 1 further includes a first seal 60 disposed between the control portion 10 and the valve body 20 to enhance the seal between the control portion 10 and the valve body 20; the electronic expansion valve further includes a first The groove 103, the first groove 103 is provided in the control part 10 or the valve body 20, the first seal 60 is received in the first groove 103, and the first groove 103 is provided to position or limit the first seal.
参见图5至图6,在一些实施例中,阀体20包括第一进口21、第一出口23以及第一通道27,其中,第一进口21和第一出口23能够通过第一通道27连通;阀体20还包括第二进口22、第二出口24以及第二通道28,第二进口22和第二出口24能够通过第二通道28连通;第一通道27与第二通道28不连通。结合图3和图4,第一进口21和第二出口24设置于阀体20的同一侧,第二进口22和第一出口23设置于阀体20的相同另一侧,这样电子膨胀阀与换热器集成或组装时,使得电子膨胀阀的第一出口23与换热器500的进口连接,换热器的出口与电子膨胀阀的第二进口22连接,便于换热器与电子膨胀阀对应安装;另外,第一进口21、第二进口22、第一出口23和第二出口24可以设置于阀体20的相同侧,也可以设置于阀体20的不同侧,可以根据电子膨胀阀在实际应用的需要进行设计。在技术方案中,按工作介质的流动方向,第一出口位于换热器的进口的上游,第二进口位于换热器的出口的下游。5 to 6, in some embodiments, the valve body 20 includes a first inlet 21, a first outlet 23, and a first channel 27, wherein the first inlet 21 and the first outlet 23 can communicate through the first channel 27. The valve body 20 further includes a second inlet 22, a second outlet 24, and a second channel 28. The second inlet 22 and the second outlet 24 can communicate through the second channel 28; the first channel 27 and the second channel 28 are not connected. 3 and 4, the first inlet 21 and the second outlet 24 are provided on the same side of the valve body 20, and the second inlet 22 and the first outlet 23 are provided on the same side of the valve body 20. When the heat exchanger is integrated or assembled, the first outlet 23 of the electronic expansion valve is connected to the inlet of the heat exchanger 500, and the outlet of the heat exchanger is connected to the second inlet 22 of the electronic expansion valve, which is convenient for the heat exchanger and the electronic expansion valve. Corresponding installation; In addition, the first inlet 21, the second inlet 22, the first outlet 23, and the second outlet 24 can be provided on the same side of the valve body 20, or on different sides of the valve body 20, according to the electronic expansion valve Designed for actual application needs. In the technical solution, according to the flow direction of the working medium, the first outlet is located upstream of the inlet of the heat exchanger, and the second inlet is located downstream of the outlet of the heat exchanger.
参见图9,在一些实施例中,阀体20还包括第一安装部25和第二安装部26,第一安装部25具有第一腔250,第二安装部26具有第二腔260,第一腔250能够与第一通道27连通,第二腔260与第二通道28连通,阀体20包括第一侧壁204,第一腔250的开口和第二腔260的开口均成形于第一侧壁204,或者说第一侧壁成形有第一腔250和第二腔260,或者说第一腔的开口和第二腔的开口位于第一侧壁,或者说第一腔的开口和第二腔的开口位于阀体的同一侧,这样本实施例中,第一进口21与第二出口24位于阀体20的同一侧,第二进口22与第一出口23位于阀体20的同一侧,第一腔250的开口与第二腔260位于阀 体20的同一侧,以上三侧为阀体的不同侧,这样有利于避免干涉,有利于阀体的小型化,以及提高阀体的利用率。Referring to FIG. 9, in some embodiments, the valve body 20 further includes a first mounting portion 25 and a second mounting portion 26. The first mounting portion 25 has a first cavity 250 and the second mounting portion 26 has a second cavity 260. A cavity 250 can communicate with the first channel 27, a second cavity 260 communicates with the second channel 28, and the valve body 20 includes a first side wall 204. The openings of the first cavity 250 and the openings of the second cavity 260 are both formed in the first The side wall 204, or the first side wall is formed with a first cavity 250 and a second cavity 260, or the opening of the first cavity and the opening of the second cavity are located on the first side wall, or the opening of the first cavity and the first The two-chamber opening is located on the same side of the valve body. In this embodiment, the first inlet 21 and the second outlet 24 are on the same side of the valve body 20, and the second inlet 22 and the first outlet 23 are on the same side of the valve body 20. The opening of the first cavity 250 and the second cavity 260 are located on the same side of the valve body 20, and the above three sides are different sides of the valve body. This is beneficial to avoid interference, facilitate the miniaturization of the valve body, and improve the use of the valve body. rate.
参见图7,在一些实施例中,阀部件40包括阀座41、阀芯42以及转子组件43,转子组件43能够带动阀芯42动作,以使阀芯42能够相对阀座41运动,阀座41具有阀口44,阀口44连通位于阀口44两侧的第一通道27,阀芯42通过靠近和远离阀口44改变第一通道在阀口44处的流通截面积,进而能够在阀口44处形成节流。Referring to FIG. 7, in some embodiments, the valve component 40 includes a valve seat 41, a valve core 42, and a rotor assembly 43. The rotor assembly 43 can drive the valve core 42 to move the valve core 42 relative to the valve seat 41. 41 has a valve port 44, and the valve port 44 communicates with the first channel 27 on both sides of the valve port 44. The valve core 42 changes the flow cross-sectional area of the first channel at the valve port 44 by approaching and moving away from the valve port 44. A throttle is formed at the port 44.
本实施例中,阀部件40还包括连接件45和套管46,套管46罩于转子组件43的外周,套管46与连接件45焊接固定,阀座41与连接件45固定连接,即通过连接件45连接套管46和阀座41,这样有利于简化模具,使得模具小型化,同时方便阀座的成形加工;当然连接件45也可以与阀座41一体成形,这样不需要再进行两者的连接设置。In this embodiment, the valve member 40 further includes a connecting piece 45 and a sleeve 46. The sleeve 46 covers the outer periphery of the rotor assembly 43, the sleeve 46 and the connecting piece 45 are welded and fixed, and the valve seat 41 and the connecting piece 45 are fixedly connected, that is, The sleeve 46 and the valve seat 41 are connected through the connecting member 45, which is helpful to simplify the mold, reduce the size of the mold, and facilitate the forming process of the valve seat. Of course, the connecting member 45 can also be integrally formed with the valve seat 41, which does not need to be performed again. Connection settings for both.
本实施例中,连接件45成形有凸缘部411,凸缘部411包括两个面,分别为凸缘部的下端面413和凸缘部的上端面412,凸缘部的上端面412朝向套筒46所在侧,凸缘部的下端面413朝向阀体20所在侧。In this embodiment, the connecting member 45 is formed with a flange portion 411. The flange portion 411 includes two surfaces, namely a lower end surface 413 of the flange portion and an upper end surface 412 of the flange portion. The upper end surface 412 of the flange portion faces On the side where the sleeve 46 is located, the lower end surface 413 of the flange portion faces the side where the valve body 20 is located.
至少部分阀部件40容置于第一腔250,阀部件40与第一安装部25固定设置。在一些实施例中,参见图9,第一安装部25包括第一台阶面252和第一侧部253,沿第一安装部25的轴线方向,第一侧部253比第一台阶面252更靠近阀体的外侧设置,且第一台阶面252与第一安装部25的主体部的轴线方向大致垂直,第一侧部253与第一安装部25的主体部的轴线方向平行,第一安装部25的主体部是指成形有第一腔的部分,第一侧部253表面成形有螺纹,定义第一侧部253表面成形的螺纹为内螺纹。At least part of the valve member 40 is received in the first cavity 250, and the valve member 40 and the first mounting portion 25 are fixedly disposed. In some embodiments, referring to FIG. 9, the first mounting portion 25 includes a first stepped surface 252 and a first side portion 253. In the axial direction of the first mounting portion 25, the first side portion 253 is more than the first stepped surface 252. The first step surface 252 is disposed near the outside of the valve body, and the axis direction of the main body portion of the first mounting portion 25 is substantially perpendicular. The first side portion 253 is parallel to the axis direction of the main body portion of the first mounting portion 25. The main body portion of the portion 25 refers to a portion where the first cavity is formed, a thread is formed on the surface of the first side portion 253, and the thread formed on the surface of the first side portion 253 is defined as an internal thread.
结合图7、图9以及图12,在一些实施例中,凸缘部的下端面413与第一台阶面252抵接,通过预先设置第一台阶面252至形成有第一腔的开口的阀体20外侧面的距离,能够控制阀座41进入第一腔250的长度。电子膨胀阀1还包括第二压紧螺母641,第二压紧螺母641具有第一通孔6411,第二压紧螺母的外周成形有螺纹,定义第二压紧螺母的外周成形的螺纹为外螺纹6412,套管46穿过第一通孔6411,第二压紧螺母641设置于连接件45的外周,第二压紧螺母的下端面与凸缘部的上端面412抵接,旋转第二压紧螺母641,第二压紧螺母641的外螺纹与第一侧部253的内螺纹作用,第二压紧螺母641将凸缘部411压紧于阀体20,阀部件40与阀体20相对固定,这样有利于保证阀部件40与阀体 20的相对位置不变,安装方便简单。With reference to FIG. 7, FIG. 9, and FIG. 12, in some embodiments, the lower end surface 413 of the flange portion is in contact with the first stepped surface 252. The distance of the outer side of the body 20 can control the length of the valve seat 41 entering the first cavity 250. The electronic expansion valve 1 further includes a second compression nut 641. The second compression nut 641 has a first through hole 6411. A thread is formed on an outer periphery of the second compression nut. The thread formed on the outer periphery of the second compression nut is defined as an outer thread. The thread 6412, the sleeve 46 passes through the first through hole 6411, the second compression nut 641 is provided on the outer periphery of the connecting member 45, and the lower end surface of the second compression nut abuts the upper end surface 412 of the flange portion, and rotates the second The compression nut 641, the external thread of the second compression nut 641 acts on the internal thread of the first side portion 253, the second compression nut 641 presses the flange portion 411 against the valve body 20, the valve member 40 and the valve body 20 Relatively fixed, this helps to ensure that the relative position of the valve member 40 and the valve body 20 does not change, and the installation is convenient and simple.
在一些实施例中,电子膨胀阀1还包括第二密封件540,阀体20的第一安装部250还可以包括第二台阶面251,第二台阶面251与第一台阶面252大致平行,且第二台阶面251相对于第一台阶面252远离第一侧壁204,即,第二台阶面251比第一台阶面252更靠近第一腔250的底部设置,第二密封件540设置于第二台阶面251与凸缘部的下端面413之间,可以根据第二密封件540的尺寸及密封的需要设置第一台阶面252和第二台阶面251的距离,这样有利于避免作用于第二密封件540的压紧力过大或过小,导致第二密封件540密封效果不佳的情况,以增强第一安装部25和阀部件40之间的密封,降低工作介质泄露的风险,从而提高了电子膨胀阀的密封性。或者,第一台阶面252设置有第二凹槽,第二密封件540设置于第一台阶面252的第二凹槽,凸缘部的下端面413与第二密封件540接触,将第二密封件540压紧,第一台阶面252设置第二凹槽,这样方便第二密封件540的安装,且也可以增强第一安装部25与阀座41之间的密封,降低工作介质泄露的风险,从而提高了电子膨胀阀的密封性,可以知道,第二凹槽也可以设置于凸缘部的侧部;第二凹槽的深度小于第二密封件的厚度,第二密封件压紧于阀部件与阀体之间。In some embodiments, the electronic expansion valve 1 further includes a second seal 540, and the first mounting portion 250 of the valve body 20 may further include a second step surface 251, the second step surface 251 is substantially parallel to the first step surface 252, The second stepped surface 251 is farther from the first side wall 204 than the first stepped surface 252, that is, the second stepped surface 251 is disposed closer to the bottom of the first cavity 250 than the first stepped surface 252, and the second seal 540 is disposed at The distance between the first stepped surface 252 and the second stepped surface 251 can be set between the second stepped surface 251 and the lower end surface 413 of the flange portion according to the size of the second sealing member 540 and the sealing needs, which is beneficial to avoid acting on The pressing force of the second seal 540 is too large or too small, resulting in a poor sealing effect of the second seal 540 to enhance the seal between the first mounting portion 25 and the valve member 40 and reduce the risk of leakage of the working medium , Thereby improving the sealing performance of the electronic expansion valve. Alternatively, the first stepped surface 252 is provided with a second groove, and the second seal 540 is provided in the second groove of the first stepped surface 252. The lower end surface 413 of the flange portion is in contact with the second seal 540, and the second The sealing member 540 is compacted, and the first stepped surface 252 is provided with a second groove, which facilitates the installation of the second sealing member 540, and can also enhance the seal between the first mounting portion 25 and the valve seat 41, and reduce the leakage of the working medium. Risk, thereby improving the sealing performance of the electronic expansion valve. It can be known that the second groove can also be provided on the side of the flange portion; the depth of the second groove is smaller than the thickness of the second seal, and the second seal is compressed. Between the valve component and the valve body.
参见图7至图11,在一些实施例中,控制部10包括罩体11、电控板12和定子组件13,电控板12与定子组件13电连接,或信号连接,或电连接和信号连接,控制部10具有控制腔112,罩体11形成至少部分控制腔112,控制腔112与第二腔连通设置,电控板12安装于控制腔112内,电控板12能够向定子组件13输出控制信号或者将控制信号传递到定子组件13;罩体11与定子组件13通过注塑为一个整体,在一些实施例中,定子组件13包括线圈及第一插针119,定子组件13通过第一插针119与电控板12电连接,或信号连接,或电连接且信号连接,以线圈、第一插针119等为嵌件注塑形成罩体11,第一插针119的一端封装于罩体11,第一插针119的另一端露出罩体11,露出罩体11的第一插针119的另一端与电控板12插接固定并能够电连接,或信号连接,或电连接且信号连接。控制部10还包括接口部115,电子膨胀阀通过接口部115与外界电连接,或信号连接,或电连接且信号连接,接口部115与罩体11注塑固定,接口部115包括第二插针116,接口部115具有安装腔1151,第二插针116伸入安装腔,第二插针116与罩体11注塑固定,第二插针116的第一端伸入控制腔112,第二插针116的第二端伸入安装腔1151,至少部分第二插针116的中部与罩体 11注塑固定,第二插针116的第一端与电控板12插接或压接固定,第二插针116的第二端伸入安装腔1151,电控板12能够通过第二插针116与电子膨胀阀外部的电源和控制信号中至少之一连接。电控板12具有第一插孔122及第二插孔125,第一插针119插入第一插孔122,第二插针116插入第二插孔125,第一插针119、第二插针116与电控板12可以通过焊接连接,也可以通过压接配合的方式连接,电控板12通过第一插针119、第二插针116与罩体11相对固定。定子组件13与罩体11通过注塑为一个整体与电控板12组装形成控制部的第一部,其中,定子组件13套于转子组件43外周。Referring to FIG. 7 to FIG. 11, in some embodiments, the control portion 10 includes a cover body 11, an electric control board 12, and a stator assembly 13. The electric control board 12 is electrically connected to the stator assembly 13, or is signal-connected, or is electrically connected and signals. The control part 10 has a control cavity 112. The cover 11 forms at least a part of the control cavity 112. The control cavity 112 is in communication with the second cavity. The electric control board 12 is installed in the control cavity 112. The electric control board 12 can be directed to the stator assembly 13 The control signal is output or transmitted to the stator assembly 13; the cover 11 and the stator assembly 13 are integrally formed by injection molding. In some embodiments, the stator assembly 13 includes a coil and a first pin 119, and the stator assembly 13 passes the first The pin 119 is electrically connected to the electric control board 12, or is connected with the signal, or is electrically connected and connected with the signal. The coil 11 is formed by insert molding with the first pin 119, etc. as an insert. One end of the first pin 119 is encapsulated in the cover. Body 11, the other end of the first pin 119 is exposed from the cover body 11, and the other end of the first pin 119 exposed from the cover body 11 is plugged and fixed to the electric control board 12 and can be electrically connected, or connected with a signal, or electrically. Signal connection. The control section 10 further includes an interface section 115, through which the electronic expansion valve is electrically connected to the outside world, or is signal-connected, or is electrically and signal-connected. The interface section 115 and the cover 11 are injection-molded and fixed, and the interface section 115 includes a second pin. 116, the interface portion 115 has a mounting cavity 1151, a second pin 116 extends into the mounting cavity, the second pin 116 is injection-molded and fixed to the cover 11, a first end of the second pin 116 extends into the control cavity 112, and the second plug The second end of the pin 116 extends into the mounting cavity 1151, and at least part of the middle of the second pin 116 is injection-molded and fixed to the cover 11; the first end of the second pin 116 is fixed to the electrical control board 12 by pressing or crimping. The second ends of the two pins 116 extend into the mounting cavity 1151, and the electronic control board 12 can be connected to at least one of a power source and a control signal external to the electronic expansion valve through the second pins 116. The electric control board 12 has a first socket 122 and a second socket 125, a first pin 119 is inserted into the first socket 122, a second pin 116 is inserted into the second socket 125, and the first pin 119 and the second socket The pin 116 and the electric control board 12 may be connected by welding or by press-fitting. The electric control board 12 is relatively fixed to the cover 11 through the first pin 119 and the second pin 116. The stator assembly 13 and the cover 11 are integrally assembled with the electric control board 12 to form the first part of the control part by injection molding. The stator assembly 13 is sleeved on the outer periphery of the rotor assembly 43.
请参见图7、图8、图11以及图14,在一些实施例中,沿第二安装部26的轴线方向,定义第二腔260的开口方向为上,第二腔260的开口方向相反的方向为下,电控板12上方的面为电控板的第一面123,与电控板的第一面123相背的一面为电控板的第二面124,或者说,沿第二安装部26的轴线方向,电控板的第二面124比电控板的第一面123更靠近第一侧壁204,可以知道,电控板12的电子元器件设置于电控板的第一面或电控板的第二面。沿第二安装部26的轴线方向,至少部分电控板12设置于第二安装部26和罩体11之间;或者说,电控板的第一面123面对部分罩体的内壁113,电控板的第二面124面对设置有第二安装部26的第一侧壁204以及传感器50,或者说,电控板12与阀体20之间没有设置罩体11,电控板12与第一插针119以及第二插针116安装固定,电控板12自与阀体20对应的罩体的一侧放入控制腔112,电控板12与第一插针119及第二插针116压接,有利于电控板的安装以及电子膨胀阀的组装。另外,电控板12与定子组件13设置于第一侧壁204的同一侧,电子膨胀阀的结构相对紧凑。Please refer to FIG. 7, FIG. 8, FIG. 11, and FIG. 14. In some embodiments, along the axial direction of the second mounting portion 26, the opening direction of the second cavity 260 is defined to be upward, and the opening direction of the second cavity 260 is opposite to The direction is downward. The surface above the electrical control board 12 is the first surface 123 of the electrical control board, and the side opposite to the first surface 123 of the electrical control board is the second surface 124 of the electrical control board, or in other words, along the second In the axial direction of the mounting portion 26, the second surface 124 of the electric control board is closer to the first side wall 204 than the first surface 123 of the electric control board. It can be known that the electronic components of the electric control board 12 are disposed on the first side of the electric control board. One side or the second side of the electric control board. Along the axial direction of the second mounting portion 26, at least a part of the electric control board 12 is disposed between the second mounting portion 26 and the cover 11; or in other words, the first surface 123 of the electric control board faces an inner wall 113 of the cover, The second surface 124 of the electric control board faces the first side wall 204 provided with the second mounting portion 26 and the sensor 50, or the cover 11 and the electric control board 12 are not provided between the electric control board 12 and the valve body 20. Mounted and fixed to the first pin 119 and the second pin 116. The electric control board 12 is placed in the control cavity 112 from the side of the cover corresponding to the valve body 20. The electric control board 12 and the first pin 119 and the second pin The pin 116 is crimped, which facilitates the installation of the electronic control board and the assembly of the electronic expansion valve. In addition, the electronic control board 12 and the stator assembly 13 are disposed on the same side of the first side wall 204, and the structure of the electronic expansion valve is relatively compact.
本技术方案中,传感器50与阀体20固定设置,传感器50的一端与第二安装部26固定,部分传感器50伸入第二腔260。In this technical solution, the sensor 50 is fixedly disposed with the valve body 20, one end of the sensor 50 is fixed with the second mounting portion 26, and a part of the sensor 50 extends into the second cavity 260.
在技术方案中,传感器50包括本体51、感应头52以及连接部53,感应头52与本体51固定设置,感应头52位于第二通道28或第二腔260,感应头52能够感应第二通道28或第二腔260内工作介质的相关参数,如工作介质的温度和压力中至少之一。电控板12与传感器50通过连接部53电连接,或信号连接,或电连接且信号连接,连接部53的一端露出本体的第一端设置,感应头52的露出本体51的第二端设置,本体51的第一端与本体的第二端位于本体的不同端,连接部53的一端封装于本体51内并与感应头52电连接,或信号连接,或 电连接且信号连接,连接部53的另一端露出本体51并与电控板12电连接,或信号连接,或电连接且信号连接,由于电控板12设置于控制腔112,因此至少部分连接部53位于控制腔112。In the technical solution, the sensor 50 includes a main body 51, a sensor head 52, and a connecting portion 53, the sensor head 52 is fixedly disposed with the body 51, the sensor head 52 is located in the second channel 28 or the second cavity 260, and the sensor head 52 can sense the second channel 28 or the relevant parameters of the working medium in the second cavity 260, such as at least one of the temperature and pressure of the working medium. The electric control board 12 and the sensor 50 are electrically or signally connected, or are electrically and signally connected through the connecting portion 53. One end of the connecting portion 53 is provided to expose the first end of the body, and the sensor head 52 is provided to expose the second end of the body 51. The first end of the main body 51 and the second end of the main body are located at different ends of the main body. One end of the connecting portion 53 is enclosed in the main body 51 and is electrically connected to the sensor head 52, or is connected to a signal, or is electrically connected and connected to a signal. The other end of 53 exposes the main body 51 and is electrically connected to the electrical control board 12, or is electrically connected, or electrically connected and signal connected. Since the electrical control board 12 is disposed in the control cavity 112, at least part of the connection portion 53 is located in the control cavity 112.
请参见图8,电控板的第二面124设置有第一抵接部121;第一抵接部121包括成形于电控板的第二面124的导电层,其中,导电层可以为镀锡层、化学镀镍和浸金等处理,或者与电控板固定连接的导电金属片;第一抵接部121与电控板的电路电连接,传感器的连接部53与第一抵接部121抵接并能够电连接,或信号连接,或电连接且信号连接,或者连接部53与第一抵接部固定连接并电连接,或信号连接,或电连接且信号连接;这样设置的传感器50与电控板12通过第一抵接部121抵接,可以相对减少线路布置,且不需要在电控板12上设置插接孔,有利于在电控板的第一面上布置电元器件,有利于提高电控板的第一面的利用率,同时不需要进行焊接,组装工艺更加简单。Referring to FIG. 8, the second surface 124 of the electrical control board is provided with a first contact portion 121; the first contact portion 121 includes a conductive layer formed on the second surface 124 of the electrical control plate, wherein the conductive layer may be plated Tin layer, electroless nickel plating, gold immersion, or conductive metal sheet fixedly connected to the electric control board; the first abutment portion 121 is electrically connected to the electric control circuit, and the sensor connection portion 53 is connected to the first abutment portion 121 is abutted and can be electrically connected, or is connected with a signal, or is electrically connected and connected with a signal, or the connection part 53 is fixedly connected with and electrically connected with the first abutment part, or is connected with a signal, or is electrically connected with a signal; 50 is in contact with the electric control board 12 through the first abutting portion 121, which can reduce the wiring arrangement relatively, and does not need to provide a plug hole in the electric control board 12, which is beneficial to the arrangement of electric elements on the first surface of the electric control board The device is beneficial to improve the utilization rate of the first side of the electric control board, and at the same time, no welding is required, and the assembly process is simpler.
具体地,本实施例中,传感器包括五个连接部53,这样有利于提高连接部与电控板的连接可靠性,传感器50还包括传导板54,传导板54为导电材料制成,传导板54封装于本体51,连接部53的第一端与传导板54固定连接,包括面与面接触的焊接、插接后焊接、或者过盈插接固定并电连接,或信号连接,或电连接且信号连接;感应头52与传导板54焊接固定连接或者插接,连接部53通过传导板54与感应头52电连接,或信号连接,或电连接且信号连接,这样通过传导板为连接部和感应头提供支撑。当然也可以通过本体限定连接部和传导板的位置,即连接部与传导板接触并电连接,或信号连接,或电连接且信号连接,连接部和传导板通过本体固定连接;通过本体限定传导板和感应头的位置,即传导板与感应头电连接,或信号连接,或电连接且信号连接,通过本体固定连接传导板和感应头。当然如果传感器只包括一个连接部,也可以不设置传导板,连接部与感应头电连接,或信号连接,或电连接且信号连接,连接部与感应头固定连接或者连接部与感应头通过本体固定连接;这样,传感器的结构更加简单。Specifically, in this embodiment, the sensor includes five connecting portions 53, which is helpful to improve the connection reliability between the connecting portion and the electric control board. The sensor 50 further includes a conductive plate 54, which is made of a conductive material. The conductive plate 54 is encapsulated in the body 51, and the first end of the connecting portion 53 is fixedly connected to the conductive plate 54, including surface-to-surface welding, welding after plugging, or interference plug fixing and electrical connection, or signal connection, or electrical connection And the signal connection; the sensor head 52 and the conductive plate 54 are welded and fixedly connected or plugged in, and the connecting portion 53 is electrically connected to the sensor head 52 through the conductive plate 54 or is signal-connected or electrically connected and signal-connected, so that the conductive plate is the connecting portion And sensor heads provide support. Of course, the position of the connecting portion and the conductive plate can also be defined by the body, that is, the connecting portion is in contact with the conductive plate and is electrically connected, or is connected with a signal, or is electrically connected with the signal, and the connecting portion and the conductive plate are fixedly connected by the body; The position of the plate and the induction head, that is, the conductive plate is electrically connected with the induction head, or is connected with a signal, or is electrically connected with the signal, and the conductive plate and the induction head are fixedly connected through the body. Of course, if the sensor includes only one connection part, a conductive plate may not be provided. The connection part is electrically connected to the induction head, or is connected to the signal, or is electrically connected and connected to the signal. The connection part is fixedly connected to the induction head or the connection part is connected to the induction head through the body. Fixed connection; this way, the structure of the sensor is simpler.
本实施例中,连接部53为弹性元件,如弹簧、弹片、片簧等,本实施例中,以连接部53为弹簧进行说明,连接部53被固定后,连接部53被电控板12和传导件54压缩变形,连接部53发生弹性形变,或者说弹性元件在电控板和传感器之间的长度小于弹性元件在自然状态的长度,这样有利于连接部53与电控板12的接触更可靠。本体成形有容纳腔,连接部的一部分容纳于容纳腔,连接 部的另一部分露出本体,连接部53露出本体的一端与电控板12的导电层抵接,连接部的相对另一端与传感器的传导板或感应头抵接,相对减少焊接,简化组装过程。连接部53抵接电控板12,电控板12发生形变,为消除连接部53对电控板12的作用力,同时加强电控板12的稳定性,罩体11设置有支撑部101,支撑部101相对凸出罩体的内壁113,并凸向电控板12,沿第二安装部26的轴线方向,支撑部101位于电控板12的上方,支撑部101与电控板的第一面123大致垂直,支撑部101与电控板的第一面123接触,支撑部101与连接部53分别位于电控板12的两侧,支撑部101用于抵消连接部53作用于电控板12的弹性力,本实施例中,电控板12包括五个第一抵接部121,罩体11包括两个支撑部101,第一抵接部121围绕形成第一区域,支撑部101支撑于第一区域的靠中心的位置,以有利于电控板12的相对稳定。In this embodiment, the connecting portion 53 is an elastic element, such as a spring, a spring, a leaf spring, etc. In this embodiment, the connecting portion 53 is used as a spring. After the connecting portion 53 is fixed, the connecting portion 53 is controlled by the electric control board 12 Compression deformation with the conductive member 54 causes the connecting portion 53 to undergo elastic deformation, or the length of the elastic element between the electrical control board and the sensor is shorter than the length of the elastic element in the natural state, which facilitates the contact between the connecting portion 53 and the electrical control board 12 more reliable. A receiving cavity is formed in the body, and a part of the connecting portion is received in the receiving cavity. The other portion of the connecting portion exposes the body. One end of the exposed portion of the connecting portion 53 abuts the conductive layer of the electric control board 12, and the other end of the connecting portion is opposite to the sensor. The conductive plate or sensor head abuts, which relatively reduces welding and simplifies the assembly process. The connecting portion 53 abuts the electric control board 12 and the electric control board 12 deforms. In order to eliminate the force exerted by the connecting portion 53 on the electric control board 12 and enhance the stability of the electric control board 12, the cover 11 is provided with a supporting portion 101. The supporting portion 101 projects relatively from the inner wall 113 of the cover body and protrudes toward the electric control board 12. The supporting portion 101 is located above the electric control board 12 along the axial direction of the second mounting portion 26. One side 123 is substantially vertical, and the supporting portion 101 is in contact with the first surface 123 of the electric control board. The supporting portion 101 and the connecting portion 53 are located on both sides of the electric controlling plate 12, respectively. The supporting portion 101 is used to cancel the connecting portion 53 acting on the electric control. The elastic force of the plate 12. In this embodiment, the electric control plate 12 includes five first abutting portions 121, the cover 11 includes two supporting portions 101, and the first abutting portion 121 surrounds to form a first region. The supporting portion 101 It is supported at the center of the first area to facilitate the relative stability of the electric control board 12.
在一些实施例中,本体51还包括限位部512,限位部为非旋转体,限位部512包括限位面535,限位面535沿限位部512的周向分布;相应地,第二安装部26包括配合部264,配合部264包括配合面,配合面成形于第二安装部的侧壁,传感器与阀体组装后,配合面和限位面配合抵接,限定传感器相对阀体的转动,保证传感器相对于阀体的位置,进而保证传感器相对于电控板的位置。具体地,请参见9及图10,本体51还包括主体部511,传导板54与主体部511固定设置,本实施例中,至少部分限位部512凸出于主体部511外缘,沿第二安装部26的轴线方向,主体部511比限位部512邻近电控板12,电子膨胀阀还包括第一压紧螺母,第一压紧螺母压于限位部512凸出于主体部的部分。在一些实施例中,限位部512包括限位面535、限位部的下端面534和限位部的上端面533,限位面535沿限位部512的周向分布,沿传感器的轴线方向,限位部的下端面534位于限位部512的一侧,限位部的上端面533位于限位部512的另一侧。限位面535包括弧面和平面,可以知道,限位部512位于第二腔260时,由于限位部为非旋转体,传感器无法转动。限位部的结构可以有多种,只要能够防止传感器转动即可,如限位部方形,椭圆形或者其他形状。第二安装部26包括第三台阶面263、抵接面262、以及第二侧部265,沿第二安装部26的轴线方向,配合面位于第三台阶面263和抵接面262之间,第三台阶面263比抵接面262更靠近第一侧壁204,第二侧部265比第三台阶面263更靠近第一侧壁204;第三台阶面263、抵接面262与第二安装部26的轴线方向大致垂直,配合面、第二侧部265大致与第二安装部26的轴线平行,第二侧部265具有内螺纹, 限位部的下端面534与抵接面262抵接,能够控制传感器50进入第二腔260的长度;电子膨胀阀包括第一压紧螺母541,第一压紧螺母541套设于主体部511,第一压紧螺母的下端面与限位部的上端面抵接,第一压紧螺母的外周形成有螺纹,第二安装部包括螺纹部,螺纹部比配合部远离第二安装部的底部设置,在第一压紧螺母541的外周的螺纹与第二安装部的第二侧部265的螺纹部的作用下,第一压紧螺母541压紧限位部512,从而连接传感器50和阀体20。In some embodiments, the body 51 further includes a limiting portion 512, which is a non-rotating body, the limiting portion 512 includes a limiting surface 535, and the limiting surface 535 is distributed along the circumferential direction of the limiting portion 512; accordingly, The second mounting portion 26 includes a mating portion 264. The mating portion 264 includes a mating surface. The mating surface is formed on a side wall of the second mounting portion. After the sensor and the valve body are assembled, the mating surface and the limiting surface cooperate to abut, limiting the sensor to the valve. The rotation of the body ensures the position of the sensor relative to the valve body, and further ensures the position of the sensor relative to the electric control board. Specifically, referring to FIG. 9 and FIG. 10, the body 51 further includes a main body portion 511, and the conductive plate 54 is fixedly disposed with the main body portion 511. In this embodiment, at least part of the limiting portion 512 protrudes from the outer edge of the main body portion 511 and extends along the first portion. In the axial direction of the two mounting portions 26, the main body portion 511 is closer to the electric control board 12 than the limiting portion 512. The electronic expansion valve further includes a first pressing nut, and the first pressing nut is pressed against the limiting portion 512 and protrudes from the main body portion. section. In some embodiments, the limiting portion 512 includes a limiting surface 535, a lower end surface 534 of the limiting portion, and an upper end surface 533 of the limiting portion. The limiting surface 535 is distributed along the circumferential direction of the limiting portion 512 and along the axis of the sensor. In the direction, the lower end surface 534 of the stopper portion is located on one side of the stopper portion 512, and the upper end surface 533 of the stopper portion is located on the other side of the stopper portion 512. The limiting surface 535 includes an arc surface and a plane. It can be known that when the limiting portion 512 is located in the second cavity 260, the sensor cannot rotate because the limiting portion is a non-rotating body. The structure of the limiting portion can be various, as long as it can prevent the sensor from rotating, such as a square, oval or other shape of the limiting portion. The second mounting portion 26 includes a third stepped surface 263, an abutting surface 262, and a second side portion 265. The mating surface is located between the third stepped surface 263 and the abutting surface 262 along the axial direction of the second mounting portion 26. The third stepped surface 263 is closer to the first side wall 204 than the abutting surface 262, and the second side portion 265 is closer to the first side wall 204 than the third stepped surface 263; the third stepped surface 263, the abutting surface 262, and the second The axis direction of the mounting portion 26 is substantially vertical. The mating surface and the second side portion 265 are substantially parallel to the axis of the second mounting portion 26. The second side portion 265 has internal threads, and the lower end surface 534 of the stopper portion abuts against the abutment surface 262. The electronic expansion valve includes a first compression nut 541, the first compression nut 541 is sleeved on the main body portion 511, and a lower end surface of the first compression nut and a limiting portion The upper end surface of the first compression nut is in contact with the thread. The second mounting portion includes a threaded portion. The threaded portion is located farther away from the bottom of the second mounting portion than the mating portion. The first pressing with the screw portion of the second side portion 265 of the second mounting portion 541 female compression limiting portion 512, thereby connecting the sensor 50 and the valve body 20.
本实施例中,电子膨胀阀还包括第三密封件520,第三密封件设置于第二安装部的底部和传感器之间,第三密封件用以在传感器和阀体之间形成密封结构,防止第二通道内的工作介质通过传感器和阀体之间的间隙进入控制腔。第三密封件520设置于第二安装部的底部并通过形成配合面限位,抵接面至第二安装部的底部的距离小于第三密封件的厚度,限位部的下端面534与第三密封件520接触,将第三密封件520压紧于第二安装部的底部,通过设置抵接面距离第二安装部底部的距离,控制第三密封件的压缩量,这样有利于避免作用于第三密封件520的压紧力过大或过小,导致第三密封件520密封效果不佳的情况,以增强第二安装部26和传感器50之间的密封,降低工作介质泄露至控制腔的风险,从而提高了电子膨胀阀的密封性,降低内漏风险;可以知道,第三密封件也可以设置于限位面和阀体之间,即在限位面或者阀体设置第三凹槽,将第三密封件卡于第三凹槽内,未设置第三凹槽的限位面或阀体压紧第三密封部。或者,在传感器的的限位部的下端面形成第三凹槽或台阶部;或,在第二安装部的抵接面形成第三凹槽,第三密封件卡于第三凹槽内,第三凹槽的深度小于第三密封件的厚度,第三密封件压紧于传感器的限位部的下端面和阀体之间。In this embodiment, the electronic expansion valve further includes a third seal 520, which is disposed between the bottom of the second mounting portion and the sensor. The third seal is used to form a seal structure between the sensor and the valve body. Prevent the working medium in the second channel from entering the control chamber through the gap between the sensor and the valve body. The third sealing member 520 is disposed on the bottom of the second mounting portion and forms a limit on the mating surface. The distance from the abutting surface to the bottom of the second mounting portion is smaller than the thickness of the third sealing member. The three seals 520 are in contact with each other, pressing the third seal 520 against the bottom of the second mounting portion. By setting the distance of the abutting surface from the bottom of the second mounting portion, the compression amount of the third seal is controlled, which is beneficial to avoid the effect. The pressing force of the third seal 520 is too large or too small, resulting in a poor sealing effect of the third seal 520 to enhance the seal between the second mounting portion 26 and the sensor 50 and reduce the leakage of the working medium to the control Cavity, thereby improving the sealing of the electronic expansion valve and reducing the risk of internal leakage; it can be known that the third seal can also be placed between the limit surface and the valve body, that is, a third The third seal is clamped in the third groove, and the limiting surface or the valve body of the third groove is not provided to press the third seal. Alternatively, a third groove or a stepped portion is formed on the lower end surface of the limiting portion of the sensor; or a third groove is formed on the abutting surface of the second mounting portion, and the third seal is caught in the third groove, The depth of the third groove is smaller than the thickness of the third seal, and the third seal is pressed between the lower end surface of the limit portion of the sensor and the valve body.
本实施例中,参见图11,罩体11还包括第一环部117,第一环部117靠近控制部的罩体11的外缘成形,或者说第一环部117围绕控制腔的外周,在本文的一个实施方式,罩体与阀体组装后,第一环部117与阀体的第一侧壁204抵接;电子膨胀阀还包括第一密封件60,第一密封件围绕控制腔的外周设置,第一密封件60设置于第一侧壁204与第一环部117之间,进一步说,罩体11将第一密封件60压紧于阀体20,这样可以增强罩体11与阀体20之间的密封,降低工作介质通过罩体和阀体的连接部泄漏至电子膨胀阀外部,或者外界的介质通过罩体和阀体的连接部进入至电子膨胀阀内部,提高电子膨胀阀的外密封,在本文的一个实施方式,第一环部117靠近罩体11的周侧设置,在一些实施例中,请参见图7,沿第二安装部26的轴线方向,将第一腔250的开口、第二腔 260的开口以及第一环部117向与该周线垂直的平面投影,形成第一投影、第二投影,第三投影,第一投影、第二投影位于第三投影包围的区域内,即第一密封件位于第一腔开口和第二腔开口的外围,这样,第一环部与阀体相对固定后,可以阻止外界的工作介质进入到控制腔。在另一实施方式,请参见图14,由于主要防止外界的介质进入控制腔,导致电控板损坏,本实施例中,沿第二安装部26的轴线方向,第一密封件60围绕第二腔260的开口设置,第一环部与阀体连接后,罩体将第一密封件压紧于阀体,这样,第一环部与阀体相对固定后,能够实现控制腔的密封。部分第一密封件设置于第一腔的开口和第二腔开口之间,还可以阻止进入到第一腔的工作介质进入控制腔,在第一腔开口的外周未设置第一密封件;这样有利于使得第一密封件小型化。第一插针119及第二插针116与罩体11一体注塑,组装电控板12时,将电控板12压向第一插针119及第二插针116,电控板12与第一插针119及第二插针116压接固定或者焊接固定,罩体的控制腔的开口朝向阀体,电控板自罩体的控制腔的开口置于控制腔,罩体11与定子组件一体成型。当然,罩体11也包括第一壳和第二壳,第一壳单独成形,第二壳与定子组件一体成型,这样控制腔的开口背向阀体,电控板自控制腔开口置于控制腔并与第一插针、第二插针固定连接,而后第一壳与第二壳固定密封设置,如激光焊接的方式密封固定;第二壳包括第一环部,第二壳形成有第一连通孔,第一环部围绕第一连通孔外周,第一密封件围绕第一连通孔外周,第二壳将第一密封件压紧于阀体。In this embodiment, referring to FIG. 11, the cover body 11 further includes a first ring portion 117. The first ring portion 117 is formed near the outer edge of the cover body 11 of the control portion, or the first ring portion 117 surrounds the outer periphery of the control cavity. In an embodiment herein, after the cover body and the valve body are assembled, the first ring portion 117 abuts the first side wall 204 of the valve body; the electronic expansion valve further includes a first seal 60 that surrounds the control cavity. The first seal 60 is disposed between the first side wall 204 and the first ring portion 117. Furthermore, the cover 11 presses the first seal 60 against the valve body 20, so that the cover 11 can be strengthened. The seal with the valve body 20 reduces the leakage of the working medium to the outside of the electronic expansion valve through the connection between the cover and the valve body, or the external medium enters the inside of the electronic expansion valve through the connection between the cover and the valve body, improving the electronic The outer seal of the expansion valve, in one embodiment of the present invention, the first ring portion 117 is disposed near the peripheral side of the cover 11. In some embodiments, referring to FIG. 7, along the axial direction of the second mounting portion 26, The opening of a cavity 250, the opening of a second cavity 260, and the first ring portion 11 7 projections on a plane perpendicular to the perimeter form a first projection, a second projection, a third projection, the first projection and the second projection are located in the area surrounded by the third projection, that is, the first seal is located in the opening of the first cavity And the periphery of the opening of the second cavity, in this way, after the first ring portion is relatively fixed with the valve body, the external working medium can be prevented from entering the control cavity. In another embodiment, please refer to FIG. 14, since the external medium is mainly prevented from entering the control cavity and the electronic control board is damaged, in this embodiment, along the axis direction of the second mounting portion 26, the first seal 60 surrounds the second The opening of the cavity 260 is provided. After the first ring portion is connected to the valve body, the cover body presses the first seal against the valve body. In this way, after the first ring portion and the valve body are relatively fixed, the control cavity can be sealed. Part of the first seal is provided between the opening of the first cavity and the opening of the second cavity, and the working medium entering the first cavity can also be prevented from entering the control cavity, and the first seal is not provided on the outer periphery of the opening of the first cavity; It is beneficial to miniaturize the first seal. The first pin 119 and the second pin 116 are integrally injection-molded with the cover 11. When the electric control board 12 is assembled, the electric control board 12 is pressed against the first pin 119 and the second pin 116. A pin 119 and a second pin 116 are fixed by welding or welding. The opening of the control cavity of the cover body faces the valve body. The electrical control board is placed in the control cavity from the opening of the control cavity of the cover body. The cover body 11 and the stator assembly One piece. Of course, the cover 11 also includes a first shell and a second shell. The first shell is separately formed, and the second shell is integrally formed with the stator assembly. In this way, the opening of the control chamber faces away from the valve body, and the electric control board is placed in the control from the opening of the control chamber. The cavity is fixedly connected with the first pin and the second pin, and then the first shell and the second shell are fixed and sealed, such as by laser welding. The second shell includes a first ring portion, and the second shell is formed with a first pin. A communication hole, the first ring portion surrounds the outer periphery of the first communication hole, the first seal member surrounds the outer periphery of the first communication hole, and the second shell presses the first seal member against the valve body.
本实施例中,电子膨胀阀还包括第一凹槽103,第一凹槽103可以设置于第一环部117;第一凹槽103也可以设置于阀体20,即第一凹槽的壁是第一侧壁204的一部分,或者说第一侧壁204包括第一凹槽的壁,第一凹槽103与第一环部117相对设置;第一密封件60设置于第一凹槽103,第一凹槽的深度小于第一密封件的高度,罩体11和阀体20固定时挤压第一密封件60,以实现阀体20和罩体11之间的密封。另外,参见图11,电子膨胀阀还可以包括至少一个卡槽105,每个卡槽与第一凹槽103共同设置于阀体或者罩体的第一环部,每个卡槽105与第一凹槽103相连通,相应地,第一密封件60还包括至少一个凸起601,每个第一密封件的凸起601与相应的卡槽105过盈配合,当第一凹槽103设置于罩体11的第一环部117时,能够防止控制部10与阀体20装配时第一密封件60掉落,方便安装。In this embodiment, the electronic expansion valve further includes a first groove 103, and the first groove 103 may be provided on the first ring portion 117; the first groove 103 may also be provided on the valve body 20, that is, the wall of the first groove Is a part of the first side wall 204, or the first side wall 204 includes a wall of a first groove, and the first groove 103 is disposed opposite the first ring portion 117; the first seal 60 is provided on the first groove 103 The depth of the first groove is smaller than the height of the first seal. When the cover 11 and the valve body 20 are fixed, the first seal 60 is pressed to achieve a seal between the valve body 20 and the cover 11. In addition, referring to FIG. 11, the electronic expansion valve may further include at least one latching slot 105, and each latching slot and the first groove 103 are jointly provided in a first ring portion of the valve body or the cover body, and each latching slot 105 and the first The grooves 103 communicate with each other. Correspondingly, the first seal member 60 further includes at least one protrusion 601. Each protrusion 601 of the first seal member is in interference fit with the corresponding slot 105. When the first groove 103 is disposed in When the first ring portion 117 of the cover body 11 is used, the first seal 60 can be prevented from falling off when the control portion 10 and the valve body 20 are assembled, which facilitates installation.
参见图11及图13,在一些实施例中,罩体11还包括限位销102,限位销 的数量大于等于两个,本实施例中,罩体包括两个限位销102,每个限位销102与第一环部117固定连接,每个限位销102相对第一环部117凸向阀体20,每个限位销102靠近第一环部117的外缘设置,或者每个限位销位于第一凹槽外侧;阀体20包括定位孔202,定位孔202的数量与限位销102的数量相同,每个限位销102插于定位孔202,限定控制部10与阀体20的相对位置,这样可以防止装配过程中控制部10相对于阀体20偏移,使得控制部10与阀体20的固定连接准确、组装方便。可以知道,限位销也可以设置于阀体,相应限位孔设置于罩体。Referring to FIG. 11 and FIG. 13, in some embodiments, the cover 11 further includes a limit pin 102, and the number of the limit pins is two or more. In this embodiment, the cover includes two limit pins 102, each Limit pins 102 are fixedly connected to the first ring portion 117. Each limit pin 102 projects toward the valve body 20 relative to the first ring portion 117. Each limit pin 102 is disposed near the outer edge of the first ring portion 117, or every Positioning pins are located outside the first groove; the valve body 20 includes positioning holes 202, and the number of positioning holes 202 is the same as the number of positioning pins 102. Each of the positioning pins 102 is inserted into the positioning hole 202, and the control portion 10 and The relative position of the valve body 20 can prevent the control portion 10 from being offset relative to the valve body 20 during assembly, so that the fixed connection between the control portion 10 and the valve body 20 is accurate and easy to assemble. It can be known that the limit pin can also be provided on the valve body, and the corresponding limit hole is provided on the cover body.
在一些实施例中,电子膨胀阀还包括紧固装置70,紧固装置70可以为螺栓或螺钉,罩体11包括第二连通孔104,第二连通孔104靠近第一环部117的外缘设置,即第二连通孔104贯穿第一环部117,阀体20包括螺纹孔203,紧固装置70穿过第二连通孔104与螺纹孔203将控制部10与阀体20固定连接,本实施例中,第二连通孔的数量大于等于两个,螺纹孔的数量与第二连通孔的数量相同,从而将第一密封件60压紧,这样可以将控制部10与阀体20集成为一个整体,并且可以保证阀体20与控制部10之间的密封性、防水防尘性,有效防止外部水或尘的侵入以及内部工作介质的泄露,起到整体密封的作用。In some embodiments, the electronic expansion valve further includes a fastening device 70. The fastening device 70 may be a bolt or a screw. The cover 11 includes a second communication hole 104, and the second communication hole 104 is close to the outer edge of the first ring portion 117. It is provided that the second communication hole 104 penetrates the first ring portion 117, the valve body 20 includes a threaded hole 203, and the fastening device 70 passes through the second communication hole 104 and the threaded hole 203 to fixedly connect the control portion 10 and the valve body 20. In the embodiment, the number of the second communication holes is two or more, and the number of the screw holes is the same as the number of the second communication holes, so that the first seal 60 is pressed tightly, so that the control portion 10 and the valve body 20 can be integrated into A whole, and can ensure the tightness, waterproofness and dustproofness between the valve body 20 and the control portion 10, effectively prevent the invasion of external water or dust and the leakage of the internal working medium, and play a role of overall sealing.
结合图11至图13,本文还提供了一种电子膨胀阀的制造方法,电子膨胀阀包括控制部、阀体、阀部件以及传感器,控制部包括罩体、定子组件以及电控板,罩体与定子组件通过注塑为一个整体,该电子膨胀阀的制造方法包括以下步骤:With reference to FIGS. 11 to 13, this document also provides a method for manufacturing an electronic expansion valve. The electronic expansion valve includes a control part, a valve body, a valve part, and a sensor. The control part includes a cover body, a stator assembly, an electric control board, and a cover body. It is integrated with the stator assembly by injection molding. The manufacturing method of the electronic expansion valve includes the following steps:
a1、控制部的组装,包括a1. Assembly of control unit, including
控制部的第一部的成形,以定子组件、第一插针、第二插针为嵌件注塑形成包括罩体的第一部;The first part of the control part is formed by injection molding the stator assembly, the first pin, and the second pin as inserts to form the first part including the cover body;
电控板与第一部的组装,电控板与第一插针、第二插针固定连接;The assembly of the electric control board and the first part, the electric control board is fixedly connected to the first pin and the second pin;
a2、将阀部件与阀体固定连接;a2, the valve parts and the valve body are fixedly connected;
a3、将传感器与阀体固定连接;a3, fixedly connect the sensor to the valve body;
a4、将步骤a1成形的控制部与步骤a2、a3形成的组件组装。a4. Assemble the control part formed in step a1 and the components formed in steps a2 and a3.
以上步骤a1、a2、a3的顺序可调,a4在步骤a1、a2、a3之后。在步骤a2前还包括阀部件的组装,阀部件包括阀座、阀芯、套筒、连接件以及转子组件,转子组件和阀芯组装置于套筒内侧,套筒与连接件焊接固定,阀座与连接件焊接固定。The sequence of the above steps a1, a2, and a3 is adjustable, and a4 is after steps a1, a2, and a3. Before step a2, the assembly of valve components is also included. The valve components include a valve seat, a valve core, a sleeve, a connector, and a rotor assembly. The rotor component and the valve core are assembled inside the sleeve, and the sleeve is welded and fixed with the connector. The seat and the connecting piece are fixed by welding.
在步骤a3前还包括传感器的成形,传感器包括连接部、传导板、本体以及感应头,连接部包括弹性元件,弹性元件与传导板接触,感应头与传导板接触,以弹性元件、传导板以及感应头为嵌件经注塑形成包括本体的传感器。Before step a3, the forming of the sensor is also included. The sensor includes a connecting portion, a conductive plate, a body, and a sensing head. The connecting portion includes an elastic element, the elastic element is in contact with the conductive plate, and the sensing head is in contact with the conductive plate. The sensor head is a sensor including a body formed by insert molding through injection molding.
步骤a2包括:放置第二密封件置于第一腔,再将阀部件置于第一腔内,通过第二压紧螺母将阀部件与阀体固定设置。Step a2 includes: placing a second seal in the first cavity, then placing the valve component in the first cavity, and fixing the valve component and the valve body through a second compression nut.
步骤a3还包括将第三密封件置于第二腔,将传感器的限位部与阀体的配合部限位,将传感器放置于阀体的第二腔内,通过第一压紧螺母将传感器与阀体固定设置。Step a3 also includes placing a third seal in the second cavity, limiting the limit portion of the sensor and the mating portion of the valve body, placing the sensor in the second cavity of the valve body, and placing the sensor through the first compression nut. It is fixed with the valve body.
步骤a4还包括:将第一密封件置于第一凹槽,限位销插入阀体的定位孔,通过紧固装置将控制部与阀体固定连接。Step a4 further includes: placing the first seal in the first groove, inserting the limit pin into the positioning hole of the valve body, and fixedly connecting the control part with the valve body through a fastening device.
步骤a4中包括:传感器与电控板电连接,或信号连接,或电连接且信号连接,将传感器的连接部与电控板的第一抵接部抵接,电控板压缩传感器连接部的弹性元件变形设定长度。Step a4 includes: the sensor is electrically connected to the electric control board, or the signal is connected, or the electric connection and the signal are connected, the connection part of the sensor is abutted with the first contact part of the electric control board, and the electric control board compresses the sensor connection part. The elastic element is deformed for a set length.
所述电子膨胀阀包括控制部、阀体、阀部件以及传感器,控制部包括罩体、定子组件和电控板,所述罩体包括第一壳和第二壳,所述第二壳与所述定子组件一体成形,所述第一壳所述第二壳之间形成控制腔,该电子膨胀阀的制造方法包括以下步骤:The electronic expansion valve includes a control part, a valve body, a valve part, and a sensor. The control part includes a cover body, a stator assembly, and an electric control board. The cover body includes a first shell and a second shell. The stator assembly is integrally formed, a control cavity is formed between the first shell and the second shell, and the manufacturing method of the electronic expansion valve includes the following steps:
a1、控制部的组装,包括a1. Assembly of control unit, including
控制部的第一部的成形,以定子组件、第一插针、第二插针为嵌件注塑形成包括第二壳的第一部;The first part of the control part is formed by injection molding the stator assembly, the first pin, and the second pin as inserts to form the first part including the second shell;
电控板与第一部的安装;电控板与第一插针、第二插针固定连接;Installation of the electric control board and the first part; the electric control board is fixedly connected to the first pin and the second pin;
第一壳和第二壳固定连接;The first shell and the second shell are fixedly connected;
a2、将阀部件与阀体固定连接;a2, the valve parts and the valve body are fixedly connected;
a3、将传感器与阀体固定连接;a3, fixedly connect the sensor to the valve body;
a4、将步骤a1成形的控制部与阀体组装。a4. Assemble the control part formed in step a1 and the valve body.
这样制造的电子膨胀阀,由于阀部件的装配和传感器的装配步骤没有限制,装配工艺设计的自由度较大。Since the electronic expansion valve manufactured in this way has no restrictions on the assembly of the valve components and the assembly steps of the sensors, the degree of freedom in the design of the assembly process is greater.
本发明实施例中,热管理组件包括电子膨胀阀,电子膨胀阀包括阀体、传感器以及控制部,控制部包括电控板,传感器与阀体固定设置,传感器与控制板电连接,或信号连接,或电连接且信号连接,并抵接设置,相对于插针焊接,有利于缓解应力;传感器与控制部直接抵接不需要线束,有利于制冷系统的集 成;传感器与阀体直接固定,有利于简化结构,使得结构的紧凑。In the embodiment of the present invention, the thermal management component includes an electronic expansion valve. The electronic expansion valve includes a valve body, a sensor, and a control part. The control part includes an electric control board. The sensor and the valve body are fixedly disposed. The sensor is electrically connected to the control board, or the signal is connected. , Or electrical connection and signal connection, and abutment setting, compared to pin welding, it is beneficial to relieve stress; the sensor and control section directly contact does not require a wiring harness, which is beneficial to the integration of the refrigeration system; the sensor and the valve body are directly fixed, there are It is beneficial to simplify the structure and make the structure compact.
本发明实施例中,热管理组件包括电子膨胀阀,电子膨胀阀包括阀体、阀部件、传感器、控制部以及第一密封件,第一密封件设置于第二腔外周,所述第一密封件被压紧于所述罩体和所述阀体之间;为了阻止外部水等介质进入控制腔,影响电路板的工作性能,在控制腔外周设置第一密封件,这样设置有利于提高电子膨胀阀的电控板所在控制腔的密封性。In the embodiment of the present invention, the thermal management component includes an electronic expansion valve. The electronic expansion valve includes a valve body, a valve member, a sensor, a control portion, and a first seal. The first seal is disposed on the outer periphery of the second cavity. The first seal The components are pressed between the cover and the valve body; in order to prevent external water and other media from entering the control cavity and affect the working performance of the circuit board, a first seal is provided on the periphery of the control cavity, which is beneficial to improve the electronics The tightness of the control chamber where the electronic control board of the expansion valve is located.
本文提供的一种电子膨胀阀的制造方法,包括将所述阀部件与所述阀体固定连接,将所述传感器与所述阀体固定连接,将成形的控制部与阀体固定连接,这样该制造方法以阀体为基准,将阀部件、传感器以及控制部与阀体固定,有利于保证制造基准,保证装配的可靠性,简化定位夹具,有利于简化电子膨胀阀组装工艺。A method for manufacturing an electronic expansion valve provided herein includes fixedly connecting the valve component to the valve body, fixedly connecting the sensor to the valve body, and fixedly connecting a formed control portion to the valve body. The manufacturing method uses the valve body as a reference, and fixes the valve component, the sensor, and the control part to the valve body, which is helpful for ensuring the manufacturing standard, ensuring the reliability of the assembly, simplifying the positioning fixture, and facilitating the electronic expansion valve assembly process.

Claims (20)

  1. 一种电子膨胀阀,包括阀体(20)、阀部件(40)、控制部(10)以及传感器(50),所述阀体(20)包括第一安装部(25)以及第二安装部(26),所述阀体(20)具有第一通道(27)、第二通道(28),所述第一安装部(25)具有第一腔(250),所述第二安装部(26)具有第二腔(260),所述第一腔(250)与所述第一通道(27)连通,所述第二腔(260)与所述第二通道(28)连通;所述阀部件(40)包括阀座(41)、阀芯(42)及转子组件(43),所述阀座(41)形成有阀口(44),所述转子组件(43)能够带动所述阀芯(42)相对所述阀座(41)运动,所述阀芯(42)相对所述阀座(41)运动能够调节所述阀口(44)的开度;至少部分所述阀座(41)位于所述第一腔(250),至少部分所述传感器(50)位于所述第二腔(260);所述控制部(10)包括罩体(11)、定子组件(13)以及电控板(12),所述定子组件(13)与所述电控板(12)电连接,或信号连接,或电连接且信号连接,所述传感器(50)与所述电控板(12)电连接,或信号连接,或电连接且信号连接;所述控制部(10)具有控制腔(112),所述罩体(11)形成至少部分所述控制腔(112),所述电控板(12)置于所述控制腔(112),部分所述传感器(50)位于所述控制腔(112),所述控制腔(112)和所述第二腔(260)连通设置,所述传感器(50)与所述阀体(20)固定连接,所述传感器(50)与所述电控板(12)抵接。An electronic expansion valve includes a valve body (20), a valve member (40), a control portion (10), and a sensor (50). The valve body (20) includes a first mounting portion (25) and a second mounting portion. (26), the valve body (20) has a first channel (27), a second channel (28), the first mounting portion (25) has a first cavity (250), and the second mounting portion ( 26) having a second cavity (260), said first cavity (250) is in communication with said first channel (27), said second cavity (260) is in communication with said second channel (28); said The valve component (40) includes a valve seat (41), a valve core (42), and a rotor assembly (43). The valve seat (41) is formed with a valve port (44), and the rotor assembly (43) can drive the valve assembly (43). The valve core (42) moves relative to the valve seat (41), and the movement of the valve core (42) relative to the valve seat (41) can adjust the opening degree of the valve port (44); at least part of the valve seat (41) is located in the first cavity (250), at least part of the sensor (50) is located in the second cavity (260); the control part (10) includes a cover body (11), a stator assembly (13) And an electric control board (12), the stator assembly (13) is electrically connected with the electric control board (12), or is connected with a signal, or is electrically connected with a signal, The sensor (50) is electrically connected with the electric control board (12), or is connected with a signal, or is electrically connected and connected with a signal; the control part (10) has a control cavity (112), and the cover (11) is formed At least part of the control cavity (112), the electric control board (12) is placed in the control cavity (112), part of the sensor (50) is located in the control cavity (112), and the control cavity (112) ) Is in communication with the second cavity (260), the sensor (50) is fixedly connected to the valve body (20), and the sensor (50) is in contact with the electric control board (12).
  2. 根据权利要求1所述的电子膨胀阀,其中,所述电控板(12)包括第一面(123)和第二面(124),所述第一面(123)和所述第二面(124)相背设置,所述第二面(124)朝向所述阀体(20),所述电控板(12)包括第一抵接部(121),所述第一抵接部(121)成形于所述第二面(124)或者所述第一抵接部(124)与所述第二面(124)固定连接,所述传感器(50)与所述第一抵接部(124)接触,所述第一抵接部(124)与所述电控板(12)的电路电连接,或信号连接,或电连接且信号连接。The electronic expansion valve according to claim 1, wherein the electric control board (12) includes a first surface (123) and a second surface (124), the first surface (123) and the second surface (124) is disposed opposite to each other, the second surface (124) faces the valve body (20), the electric control board (12) includes a first abutting portion (121), and the first abutting portion (121) 121) formed on the second surface (124) or the first abutting portion (124) and the second surface (124) are fixedly connected, and the sensor (50) and the first abutting portion ( 124) contact, the first abutting portion (124) is electrically connected with a circuit of the electric control board (12), or is connected with a signal, or is electrically connected with a signal.
  3. 根据权利要求2所述的电子膨胀阀,其中,所述传感器(50)包括本体(51)、感应头(52)以及连接部(53),所述感应头(52)与所述本体(51)固定连接,所述连接部(53)与所述本体(51)固定连接,所述感应头(52)与所述连接部(53)电连接,或信号连接,或电连接且信号连接,所述感应头(52)位于所述第二腔(260)或者所述第二通道(28);所述连接部(53)包括弹性元件,所述弹性元件与所述第一抵接部(121)抵接,所述弹性元件在所述电控板(12)和所述传感器(50)之间的长度小于所述弹性元件在自然状态 的长度。The electronic expansion valve according to claim 2, wherein the sensor (50) comprises a body (51), a sensing head (52), and a connection portion (53), the sensing head (52) and the body (51) ) Fixed connection, the connection portion (53) is fixedly connected to the body (51), the induction head (52) is electrically connected to the connection portion (53), or is signal connected, or is electrically connected and signal connected, The sensing head (52) is located in the second cavity (260) or the second channel (28); the connecting portion (53) includes an elastic element, and the elastic element and the first abutting portion ( 121) abutment, the length of the elastic element between the electric control board (12) and the sensor (50) is shorter than the length of the elastic element in a natural state.
  4. 根据权利要求3所述的电子膨胀阀,其中,所述传感器(50)包括两个以上所述弹性元件,所述传感器(50)还包括传导板(54),所述传导板(54)与所述本体(51)固定连接,所述弹性元件与所述传导板(54)焊接固定,所述感应头(52)与所述传导板(54)固定,且所述感应头(52)与所述传导板(54)电连接,或信号连接,或电连接且信号连接。The electronic expansion valve according to claim 3, wherein the sensor (50) includes two or more of the elastic elements, and the sensor (50) further includes a conductive plate (54), and the conductive plate (54) and The body (51) is fixedly connected, the elastic element is welded and fixed to the conductive plate (54), the induction head (52) is fixed to the conductive plate (54), and the induction head (52) and The conductive plate (54) is electrically connected, or is signal connected, or is electrically connected and signal connected.
  5. 根据权利要求3或4所述的电子膨胀阀,其中,所述控制部(10)包括支撑部(101),所述支撑部(101)自所述罩体(11)向所述控制腔(112)凸起形成,所述支撑部(101)与所述第一面(123)抵接,所述支撑部(101)与所述第一面(123)的接触位置与所述第一抵接部(121)所在所述第二面(124)的位置一一对应设置,或者所述支撑部(101)与所述第一面(123)的接触位置位于所述第一抵接部(121)围绕的区域内。The electronic expansion valve according to claim 3 or 4, wherein the control portion (10) includes a support portion (101), and the support portion (101) extends from the cover (11) to the control cavity (11). 112) A protrusion is formed, the support portion (101) is in contact with the first surface (123), and the contact position between the support portion (101) and the first surface (123) is in contact with the first contact The positions of the second surface (124) where the contact portion (121) is located are correspondingly arranged, or the contact position of the support portion (101) and the first surface (123) is located at the first contact portion ( 121) within the surrounding area.
  6. 根据权利要求5所述的电子膨胀阀,其中,所述弹性元件为弹簧,所述本体(51)成形有容纳腔,所述弹簧的一部分容纳于所述容纳腔,所述弹簧的另一部分露出所述本体(51),所述第一抵接部(121)包括成形于所述电控板(12)的导电层,露出所述本体(51)的所述弹簧的另一部分与所述导电层抵接。The electronic expansion valve according to claim 5, wherein the elastic element is a spring, the body (51) is formed with a receiving cavity, a part of the spring is received in the receiving cavity, and another part of the spring is exposed The body (51), the first abutting portion (121) includes a conductive layer formed on the electric control board (12), and another part of the spring exposing the body (51) is electrically conductive. Layers abut.
  7. 根据权利要求6所述的电子膨胀阀,其中,所述本体(51)包括限位部(512),所述限位部(512)为非旋转体,所述限位部(512)包括限位面(535),所述限位面(535)沿所述限位部(512)的周向分布,至少部分限位部(512)凸出所述本体(51)的外缘设置,所述第二安装部(26)包括配合部(264)和抵接面(262),所述配合部(264)包括配合面,所述配合面成形于所述第二安装部(26)的侧壁,所述限位面(535)与所述配合面抵接,所述抵接面(262)比所述配合部(264)更靠近所述第二安装部(26)的底部设置,所述限位部(512)的下端面与所述抵接面(262)抵接。The electronic expansion valve according to claim 6, wherein the body (51) includes a limiting portion (512), the limiting portion (512) is a non-rotating body, and the limiting portion (512) includes a limiting portion A limiting surface (535), the limiting surface (535) is distributed along the circumferential direction of the limiting portion (512), and at least a part of the limiting portion (512) protrudes from the outer edge of the body (51), so that The second mounting portion (26) includes a mating portion (264) and an abutting surface (262), the mating portion (264) includes a mating surface, and the mating surface is formed on a side of the second mounting portion (26) Wall, the limiting surface (535) abuts the mating surface, and the abutting surface (262) is disposed closer to the bottom of the second mounting portion (26) than the mating portion (264), so A lower end surface of the limiting portion (512) is in contact with the abutting surface (262).
  8. 根据权利要求7所述的电子膨胀阀,其中,所述电子膨胀阀包括第一压紧螺母(541),所述第一压紧螺母(541)的外周形成有螺纹,所述第二安装部(26)包括螺纹部,所述螺纹部比所述配合部(264)远离所述第二安装部(26)的底部设置,所述螺纹部成形于所述第二安装部(26)的侧壁,所述第一压紧螺母(541)与所述螺纹部螺纹连接,所述第一压紧螺母(541)的下端面与所述限位部的上端面(533)抵接。The electronic expansion valve according to claim 7, wherein the electronic expansion valve includes a first compression nut (541), an outer periphery of the first compression nut (541) is formed with a thread, and the second mounting portion (26) A thread portion is provided, which is provided farther from the bottom of the second mounting portion (26) than the mating portion (264), and the thread portion is formed on a side of the second mounting portion (26) Wall, the first compression nut (541) is threadedly connected to the threaded portion, and a lower end surface of the first compression nut (541) abuts an upper end surface (533) of the limiting portion.
  9. 根据权利要求1至8任一项所述的电子膨胀阀,其中,至少所述罩体(11)的一部分与所述定子组件(13)一体注塑成形,所述控制腔(112)的开口朝向所述阀体(20),所述第一腔(250)的开口和所述第二腔(260)的开口位于所述阀体(20)的同一侧,所述第一腔(250)的开口和所述第二腔(260)的开口均位于所述阀体(20)的第一侧壁,所述电子膨胀阀还包括第一插针(119)和第二插针(116),所述第一插针(119)和所述第二插针(116)均与所述罩体(11)注塑固定,所述电控板(12)与所述第一插针(119)和所述第二插针(116)固定连接,所述控制部(10)与所述阀体(20)固定连接,至少所述第二腔(260)的外周设置有第一密封件(60),所述第一密封件(60)通过所述控制部(10)和所述阀体(20)压紧。The electronic expansion valve according to any one of claims 1 to 8, wherein at least a part of the cover body (11) is injection-molded integrally with the stator assembly (13), and the opening of the control cavity (112) faces The valve body (20), the opening of the first cavity (250) and the opening of the second cavity (260) are located on the same side of the valve body (20), and the opening of the first cavity (250) The opening and the opening of the second cavity (260) are both located on the first side wall of the valve body (20), and the electronic expansion valve further includes a first pin (119) and a second pin (116), The first pin (119) and the second pin (116) are injection-molded and fixed to the cover (11), and the electric control board (12) and the first pin (119) and The second pin (116) is fixedly connected, the control portion (10) is fixedly connected to the valve body (20), and at least an outer periphery of the second cavity (260) is provided with a first seal (60) The first seal (60) is pressed by the control portion (10) and the valve body (20).
  10. 根据权利要求1所述的电子膨胀阀,所述第一通道(27)与所述第二通道(28)不连通,所述第一腔的开口和所述第二腔的开口位于所述阀体的同一侧,所述控制部(10)还包括接口部(115),所述接口部(115)与所述罩体(11)注塑固定,所述接口部(115)用于所述电子膨胀阀与外界电连接,或信号连接,或电连接和信号连接,所述电子膨胀阀包括第一密封件(60),所述第一密封件(60)围绕所述控制腔(112)的外周设置,所述第一密封件(60)被压紧于所述罩体(11)和所述阀体(20)之间。The electronic expansion valve according to claim 1, wherein the first channel (27) is not in communication with the second channel (28), and the opening of the first cavity and the opening of the second cavity are located in the valve On the same side of the body, the control part (10) further includes an interface part (115), the interface part (115) and the cover (11) are injection-molded and fixed, and the interface part (115) is used for the electronics The expansion valve is electrically connected to the outside, or is connected with a signal, or is electrically connected with a signal. The electronic expansion valve includes a first seal (60), and the first seal (60) surrounds the control cavity (112). It is provided on the outer periphery, and the first seal (60) is pressed between the cover body (11) and the valve body (20).
  11. 根据权利要求10所述的电子膨胀阀,其中,所述第一腔(250)的开口和所述第二腔(260)的开口位于所述阀体(20)的第一侧壁(204),以所述定子组件(13)为嵌件经注塑形成包括所述罩体(11)的第一部,所述控制腔(112)的开口朝向所述阀体(20),所述罩体(11)包括第一环部(117),所述第一环部(117)围绕所述控制腔(112)外周,所述第一环部(117)靠近所述控制部(10)的外缘成形,所述第一环部(117)或所述第一侧壁(204)成形有第一凹槽(103),所述第一凹槽(103)位于所述第一腔(250)开口和所述第二腔(260)开口的外周,所述第一密封件(60)限位于所述第一凹槽(103),所述第一凹槽(103)的深度小于所述第一密封件(60)的高度,所述第一侧壁(204)将所述第一密封件(60)压紧于所述第一环部(117),所述第一侧壁(204)与所述第一环部(117)抵接。The electronic expansion valve according to claim 10, wherein the opening of the first cavity (250) and the opening of the second cavity (260) are located on a first side wall (204) of the valve body (20) The first part including the cover body (11) is formed by injection molding with the stator assembly (13) as an insert, and the opening of the control cavity (112) faces the valve body (20). (11) includes a first ring portion (117) surrounding the outer periphery of the control cavity (112), and the first ring portion (117) is close to the outside of the control portion (10) Edge forming, the first ring portion (117) or the first side wall (204) is formed with a first groove (103), and the first groove (103) is located in the first cavity (250) The outer periphery of the opening and the opening of the second cavity (260), the first seal (60) is limited to the first groove (103), and the depth of the first groove (103) is smaller than the first groove The height of a seal (60), the first side wall (204) presses the first seal (60) against the first ring portion (117), and the first side wall (204) Abuts against the first ring portion (117).
  12. 根据权利要求10所述的电子膨胀阀,其中,所述第一腔(250)的开口和所述第二腔(260)的开口位于所述阀体(20)的第一侧壁(204),以所述定子组件(13)为嵌件经注塑形成包括所述罩体(11)的第一部,所述罩体(11) 包括第一环部(117),所述第一环部(117)靠近所述控制部(10)的外缘成形,所述第一侧壁(204)或所述第一环部(117)成形有第一凹槽(103),所述第一凹槽(103)位于所述第二腔(206)开口的外周,至少部分所述第一凹槽(103)位于所述第一腔(250)开口和所述第二腔(206)开口之间,所述第一密封件(60)限位于所述第一凹槽(103),所述第一凹槽(103)的深度小于所述第一密封件(60)的高度,所述第一侧壁(204)将所述第一密封件(60)压紧于所述第一环部(117),所述第一侧壁(204)与所述第一环部(117)抵接。The electronic expansion valve according to claim 10, wherein the opening of the first cavity (250) and the opening of the second cavity (260) are located on a first side wall (204) of the valve body (20) And using the stator assembly (13) as an insert to form a first portion including the cover body (11) by injection molding, the cover body (11) including a first ring portion (117), the first ring portion (117) The outer edge of the control part (10) is formed, and the first side wall (204) or the first ring part (117) is formed with a first groove (103), and the first recess The groove (103) is located on the outer periphery of the opening of the second cavity (206), and at least part of the first groove (103) is located between the opening of the first cavity (250) and the opening of the second cavity (206) The first seal (60) is limited to the first groove (103), and the depth of the first groove (103) is less than the height of the first seal (60). The side wall (204) presses the first seal (60) against the first ring portion (117), and the first side wall (204) abuts the first ring portion (117).
  13. 根据权利要求10所述的电子膨胀阀,其中,所述第一腔(250)的开口和所述第二腔(260)的开口位于所述阀体(20)的第一侧壁(204),所述罩体(11)包括第一壳和第二壳,以所述定子组件(13)为嵌件经注塑形成包括所述第二壳的第一部,所述控制腔(112)的开口背向所述阀体(20),所述第一壳和所述第二壳密封固定,所述第二壳形成有第一连通孔,所述第一密封件(60)围绕所述第一连通孔外周,所述第二壳将所述第一密封件(60)压紧于所述阀体(20),所述第二壳包括第一环部(117),所述第一环部(117)围绕所述第一连通孔外周,所述第一环部(117)或所述第一侧壁(204)成形有第一凹槽(103),所述第一密封件(60)限位于所述第一凹槽(103),所述第一凹槽(103)的深度小于所述第一密封件(60)的高度,所述第一侧壁(204)将所述第一密封件(60)压紧于所述第一环部(117),所述第一侧壁(204)与所述第一环部(117)抵接。The electronic expansion valve according to claim 10, wherein the opening of the first cavity (250) and the opening of the second cavity (260) are located on a first side wall (204) of the valve body (20) The cover (11) includes a first shell and a second shell, and the stator assembly (13) is used as an insert to form a first part including the second shell through injection molding, and the control cavity (112) The opening faces away from the valve body (20), the first shell and the second shell are sealed and fixed, the second shell is formed with a first communication hole, and the first seal (60) surrounds the first An outer periphery of a communication hole, the second shell presses the first seal (60) against the valve body (20), the second shell includes a first ring portion (117), and the first ring A portion (117) surrounds the outer periphery of the first communication hole, a first groove (103) is formed in the first ring portion (117) or the first side wall (204), and the first seal (60) ) Is limited to the first groove (103), the depth of the first groove (103) is less than the height of the first seal (60), and the first side wall (204) divides the first A seal (60) is pressed against the first ring portion (117), the first side wall (204) and the The first ring portion (117) abuts.
  14. 根据权利要求11-13任一项所述的电子膨胀阀,其中,所述罩体(11)包括限位销(102),所述限位销(102)位于所述第一凹槽(103)外侧,所述限位销(102)的数量大于等于两个,所述阀体(20)包括定位孔(202),所述定位孔(202)的数量与所述限位销(102)的个数相同,每个所述限位销(102)插于所述定位孔(202)。The electronic expansion valve according to any one of claims 11-13, wherein the cover (11) includes a limit pin (102), and the limit pin (102) is located in the first groove (103) ) Outside, the number of the limit pins (102) is two or more, the valve body (20) includes positioning holes (202), and the number of the positioning holes (202) is the same as that of the limit pins (102) The number is the same, and each of the limit pins (102) is inserted into the positioning hole (202).
  15. 根据权利要求14所述的电子膨胀阀,其中,所述电子膨胀阀还包括紧固装置(70),所述罩体(11)包括第二连通孔(104),所述第二连通孔(104)成形于所述第一环部(117),所述第二连通孔(104)比所述限位销(102)靠近所述罩体(11)的外缘设置,所述阀体(20)包括螺纹孔,所述紧固装置(70)穿过所述第二连通孔(104)并与所述螺纹孔螺纹连接。The electronic expansion valve according to claim 14, wherein the electronic expansion valve further comprises a fastening device (70), the cover (11) includes a second communication hole (104), and the second communication hole (104) 104) formed on the first ring portion (117), the second communication hole (104) is provided closer to the outer edge of the cover body (11) than the limit pin (102), and the valve body ( 20) includes a threaded hole, and the fastening device (70) passes through the second communication hole (104) and is screwed with the threaded hole.
  16. 根据权利要求15所述电子膨胀阀,其中,所述电子膨胀阀包括至少一个卡槽(105),每个所述卡槽(105)与所述第一凹槽(103)共同设置于所述 阀体(20)或所述第一环部(117),每个所述卡槽(105)与所述第一凹槽(103)相通;相应所述第一密封件(60)包括至少一个凸起(601),每个所述第一密封件(60)的凸起(601)与相应的所述卡槽(105)过盈配合。The electronic expansion valve according to claim 15, wherein the electronic expansion valve includes at least one latching slot (105), and each of the latching slots (105) and the first recess (103) are provided in the common The valve body (20) or the first ring portion (117), each of the clamping grooves (105) communicates with the first groove (103); the corresponding first seal (60) includes at least one A protrusion (601), the protrusion (601) of each of the first seals (60) and the corresponding slot (105) are in interference fit.
  17. 一种热管理组件,包括电子膨胀阀和换热器,所述电子膨胀阀与所述换热器固定连接,所述电子膨胀阀为如权利要求1-16任一项所述的电子膨胀阀;A thermal management component includes an electronic expansion valve and a heat exchanger, the electronic expansion valve is fixedly connected to the heat exchanger, and the electronic expansion valve is the electronic expansion valve according to any one of claims 1-16. ;
    所述阀体(20)包括第一进口(21)、第二进口(22)、第一出口(23)和第二出口(24),所述第一通道(27)连通所述第一出口(23)和所述第一进口(21),所述第二通道(28)连通所述第二出口(23)和所述第二进口(22),所述第一出口(23)与所述换热器(500)的进口连通,所述第二进口(22)与所述换热器(500)的出口连通,所述换热器(500)的进口通过所述换热器(500)的第三通道与所述换热器(500)的出口连通。The valve body (20) includes a first inlet (21), a second inlet (22), a first outlet (23), and a second outlet (24), and the first passage (27) communicates with the first outlet (23) and the first inlet (21), and the second channel (28) connects the second outlet (23) and the second inlet (22), and the first outlet (23) is connected to all The inlet of the heat exchanger (500) is in communication, the second inlet (22) is in communication with the outlet of the heat exchanger (500), and the inlet of the heat exchanger (500) passes through the heat exchanger (500) The third channel) is in communication with the outlet of the heat exchanger (500).
  18. 一种电子膨胀阀的制造方法,所述电子膨胀阀为如权利要求1-16任一项所述的电子膨胀阀该电子膨胀阀的制造方法包括以下步骤:A method for manufacturing an electronic expansion valve, wherein the electronic expansion valve is the electronic expansion valve according to any one of claims 1 to 16, and the method for manufacturing the electronic expansion valve includes the following steps:
    组装所述控制部(10);Assembling the control section (10);
    将所述阀部件(40)与所述阀体(20)固定连接;Fixedly connecting the valve component (40) with the valve body (20);
    将所述传感器(50)与所述阀体(20)固定连接;Fixedly connecting the sensor (50) and the valve body (20);
    将组装成形的控制部(10)与所述阀体(20)组装。The assembled control part (10) is assembled with the valve body (20).
  19. 根据权利要求18所述的电子膨胀阀的制造方法,其中,所述罩体(11)与所述定子组件(13)通过注塑为一个整体;所述组装所述控制部(10)为:The method of manufacturing an electronic expansion valve according to claim 18, wherein the cover body (11) and the stator assembly (13) are integrally formed by injection molding; the assembling the control portion (10) is:
    以定子组件(13)、第一插针(119)、第二插针(116)为嵌件,注塑形成包括罩体(11)的第一部,实现所述控制部(10)的第一部的成形;The stator assembly (13), the first pin (119), and the second pin (116) are used as inserts, and the first part including the cover body (11) is injection-molded to realize the first part of the control part (10). Forming of the part
    将电控板(12)与第一插针(119)、第二插针(116)固定连接,实现所述电控板(12)与所述第一部的组装。The electric control board (12) is fixedly connected with the first pin (119) and the second pin (116) to realize the assembly of the electric control board (12) and the first part.
  20. 根据权利要求18或19所述的电子膨胀阀的制造方法,其中,所述将所述阀部件(40)与所述阀体(20)固定连接,包括:The method for manufacturing an electronic expansion valve according to claim 18 or 19, wherein the fixedly connecting the valve member (40) and the valve body (20) comprises:
    将所述阀部件(40)安装于所述阀体(20)的第一安装部(25),将所述阀部件(40)的凸缘部的下端面(413)与所述第一安装部(25)的第一台阶面(252)抵接,将第二压紧螺母(641)套于所述阀部件(40)的外周,将所述第二压紧螺母(641)与所述阀体(20)的第一安装部(25)的螺纹部螺纹连接,使得所述第二压紧螺母(641)的下端面与所述阀部件(40)的凸缘部的上端面(412)抵接;The valve member (40) is mounted on a first mounting portion (25) of the valve body (20), and a lower end face (413) of a flange portion of the valve member (40) is mounted on the first mounting portion (25). The first stepped surface (252) of the portion (25) abuts, and a second compression nut (641) is sleeved on the outer periphery of the valve member (40), and the second compression nut (641) and the The threaded portion of the first mounting portion (25) of the valve body (20) is threaded so that the lower end surface of the second compression nut (641) and the upper end surface (412) of the flange portion of the valve member (40) )Abut;
    所述将所述传感器(50)与所述阀体(20)固定连接,包括:The fixed connection of the sensor (50) and the valve body (20) includes:
    将所述传感器(50)安装于所述阀体(20)的第二安装部(26),使得所述传感器(50)的限位面(535)与所述阀体(20)的配合面抵接,所述传感器(50)的限位部(512)的下端面(413)与所述第二安装部(26)的抵接面(262)抵接,将第一压紧螺母(541)套于所述传感器(50)的外周,将所述第一压紧螺母(541)与所述阀体(20)的第二安装部(26)的螺纹部螺纹连接,使得所述第一压紧螺母(541)的下端面(413)与所述传感器(50)的限位部(512)的上端面抵接;The sensor (50) is mounted on the second mounting portion (26) of the valve body (20), so that the limiting surface (535) of the sensor (50) and the mating surface of the valve body (20) The abutment, the lower end surface (413) of the limit portion (512) of the sensor (50) abuts the abutment surface (262) of the second mounting portion (26), and presses the first compression nut (541 ) Is sleeved on the outer periphery of the sensor (50), and the first compression nut (541) and the threaded portion of the second mounting portion (26) of the valve body (20) are screwed so that the first The lower end surface (413) of the compression nut (541) is in contact with the upper end surface of the limit portion (512) of the sensor (50);
    所述传感器(50)与所述电控板(12)电连接,或信号连接,或电连接且信号连接,将所述传感器(50)的连接部(53)与所述电控板(12)的第一抵接部(121)抵接,所述电控板(12)压缩所述连接部(53)的弹性元件变形设定长度。The sensor (50) is electrically connected with the electric control board (12), or is connected with a signal, or is electrically connected with a signal, and the connection part (53) of the sensor (50) is connected with the electric control board (12). The first abutting portion (121) of a) abuts, and the electric control board (12) compresses the elastic element of the connecting portion (53) to deform a set length.
PCT/CN2019/096207 2018-07-20 2019-07-16 Electronic expansion valve, manufacturing method thereof, and thermal management assembly WO2020015654A1 (en)

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EP19838360.6A EP3825588A4 (en) 2018-07-20 2019-07-16 Electronic expansion valve, manufacturing method thereof, and thermal management assembly
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CN201810801389.8 2018-07-20
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